"Ryan, Ethan, since you two seem to prefer a more hands-on approach, why don't you come up to the front of the class?" said Professor Heart.
Ethan and Ryan sat at the back of the lecture hall. Today's lesson was on human sexual reproduction, and Ethan wasn't paying attention. Ryan had worn a cute sundress, and she was letting him run his hand up her leg. She leaned in with a smile and kissed him as his hand drifted around her thigh to her vagina. He found smooth skin and slid along it until he reached her clit. She grabbed his wrist and guided him out from under her skirt.
"You have to earn that." She whispered.
"Anything you want me to do?" He asked just as quietly.
"Take yours out and rub it. After you cum you can rub mine."
He laughed, "Sounds like a win-win for you. What's in it for me?"
"All the sex you want when we get back to the dorm." She kissed his ear.
He breathed deeply. Catching a whiff of lavender perfume mingled with the smell of paper that permeated the classroom. He was a little nervous to do what Ryan had asked. But he also wanted to fuck her later, so he decided to risk it. The teacher was droning on about erogenous zones as he slipped his already hard cock out of his shorts. He took a firm grip on his cock and began to slide his hand up and down its length. Ryan was watching it with a hungry grin. He found a pace that let him hide what he was doing from the people around them, but also promised to make him cum soon. Ryan pulled her skirt back, spread her beautiful legs, and slid her finger into her pussy as she watched.
"Ryan, Ethan, since you two seem to prefer a more hands-on approach, why don't you come up to the front of the class?" said Professor Heart.
Ethan's blood ran cold while Ryan blushed heavily. They had a good plan, almost. They were at the back, at the top of the raised seating area. No one else was in the back row. They would have been invisible. If not for one simple fact. The desk had nothing blocking their legs from Heart's view. Ryan rose and held her hand out for Ethan. He shoved his cock back into his shorts and took it. Together, they walked down to where the professor was moving the projector out of the way. Ethan watched Heart for any sign that the middle-aged woman was angry. He didn't see it. If anything, she seemed amused.
"Ok, we were talking about the female erogenous zones. Ryan, would you be so kind as to set your purse there on the table with all your clothing?" Heart said, as casually as if she were explaining why the sky is blue.
Ryan set her purse down and pulled her sundress over her head. Revealing the body Ethan couldn't get enough of. Heart continued speaking.
“Today’s focus is female erogenous zones beyond the obvious,” she said, strolling around the Ryan. “It's important to know how to read arousal, not just stimulate it.”
Ryan stood there, her face and neck pink with blush as Professor Heart ran a hand along her back.
“I'm happy Ryan has graciously agreed to let us map her body for you. The slide show is useful, but live reactions are more so.” Heart looked to the group. “Let’s start with the inner thighs. Often overlooked. Gentle touch here,” she traced her manicured nails slowly up Ryan’s thigh, stopping just shy of the crease where leg met groin, “can ignite anticipation. It’s not just about friction. It’s about anticipation.” Ryan shivered slightly, and Heart smiled. “You see that?” she asked, glancing toward the group. “That’s the nervous system opening up. The thighs, the stomach, even the space behind the knees—”
She moved around Ryan, turning her gently to expose the back of her knee. “There are clusters of nerve endings here. Try feather-light strokes. Not pressure.” Turning Ryan back to the class. “Now, let’s address the nipples. Ryan’s already responding, see the contraction? Cold? Maybe. However, stimulation helps us determine if it's arousal. Some people are more sensitive to suction. While others are vibration. Sadly, we don't have a vibrator.”
"I have one in my purse," Ryan said shyly.
Heart smiled as Ryan quickly handed it to her.
“May I use this on you, Ryan?” With Ryan’s nod, Heart placed the soft buzzing tip just under her left nipple and waited. Ryan’s breath caught. “You wait for the body to lean into it. If she arches up, you follow. If she pulls back, you pause. Also, note that I asked for permission before touching. Consent is non-negotiable. Your partner must want what you offer and be willing to receive it from you. Consent isn’t just verbal. It’s physical. Watch her movements. You see, Ryan is leaning into my touch. This is a good sign. That’s why eye contact matters even when mouths are full, if you’ll excuse the pun.” The room chuckled.
Now she gestured downward. “Let’s address the vulva. Too many people jump to the clit. That’s not wrong, but it’s like slamming the gas on a cold engine. Lube, breath, teasing. The mons, the outer lips, even the perineum,” she touched lightly along each area, “deserve attention.” Ryan seemed to be electrified with each touch of Heart's fingers. Like she was desperate for an orgasm. “You want to be memorable? Master patience. Build arousal like it’s a ritual.”
She guided Ryan up onto the table and instructed her to lie back. She guided Ryan's feet up onto the table and guided Ryan's knees apart, leaving her pussy exposed to the class. The room was quiet, expectant.
The soft hum of the low-watt lighting above the table cast Ryan’s skin in a warm glow. Ethan's cock was begging to be painful from need. Seeing his girlfriend exposed and ready made him wish he were inside her.
“Before we begin,” Heart said, her voice calm but resonant, “remember this is not a performance. This is a presentation. What you’re watching isn’t just instruction, not porn.”
She glanced down at Ryan, who nodded with the tiniest smile, her dark lashes fluttering. Her body was already lightly flushed from the previous demonstration. Heart gently rested her free hand on Ryan’s inner thigh.
“First contact,” she said, turning on the wand to its lowest hum. “We begin beside the clit. Not on it.”
She touched the vibrator just to the left of Ryan’s labia, letting the vibration pulse into the surrounding tissue. Ryan exhaled slowly, her hips shifting just half an inch toward the pressure.
“Notice the breath,” Heart said, her eyes never leaving Ryan. “That wasn’t dramatic. It was deep. She’s welcoming the sensation.” The vibrator circled slowly, never landing in one spot for more than a second. “I’m warming the area. Blood flow is increasing. If I press too hard now, I risk overwhelming her or numbing the tissue. We don’t want to ‘go hard we want to bring her to orgasm, not shove her off the cliff.”
Now Heart let the vibrator glide upward, tracing the outer lips, teasing toward the clitoral hood without yet touching it. Ryan’s legs parted further.
“Her body is inviting,” Heart said softly. “The hips speak before the moans. Watch for them.” The vibrator finally nestled gently against Ryan’s clit, still on a low setting. Ryan’s fingers curled beside her. “She’s making no sound. That’s not a lack of arousal. Some women get quieter as they drop into sensation. We don’t perform arousal, we respond to it.” Heart slowly increased the vibration to medium. Ryan’s mouth opened slightly, a faint gasp escaping. “There it is,” Heart said with a nod. “Now you’ll start to see involuntary movement. Her thighs are twitching. Her feet are flexing.”
Ryan let out a longer, shakier breath as her hips began a slow, rhythmic tilt. “She’s starting to chase the stimulation. That’s a good time to vary it.”
Heart shifted the wand lower, dragging it down to the entrance of Ryan’s vagina, letting it buzz there briefly before returning to the clit. Ethan could hardly contain himself. He would happily fuck Professor Heart right now, just for the chance to be inside Ryan.
“Edging is a skill. Anticipation sharpens response. We want to keep her hovering just below release for a moment longer.” Ryan whimpered now, softly. “There. Now we’re entering the pre-orgasmic plateau. Her nipples are visibly tight. Abdomen is starting to tense.”
Heart increased the power a final time and steadied the vibrator directly on Ryan’s clit. Ryan’s breath hitched. Her hands gripped the table. Her hips lifted once, twice, then held. The orgasm hit in ripples. From Ethan's own experiments with Ryan's pussy he knew she was having one of her more intense orgasms. Her thighs trembled as she gasped out loud, eyes squeezing shut. The sound was raw, not theatrical, just the release of held tension. Heart didn’t move the wand immediately, just softened the pressure and waited until Ryan’s body stopped pulsing.
Then, with surgical gentleness, she turned the wand off and laid it aside. “That,” she said quietly, looking around at the room, “was not a sprint. That was a dialogue. When you see a woman climax like that, watch how her whole body lets go. That’s how you know you gave her what she needed.” Ryan opened her eyes again and smiled weakly, clearly dazed in the best way. "Now for the male." Ethan's heart leaped in his chest.
Ethan stood next to the table where Ryan was still lying. "Please strip." Heart said.
He pulled his shirt over his head. Then slid his shorts and underwear to the ground. Now fully naked, with every pair of eyes on him. The lighting was warm, but the air felt cool on his skin. He was already hard. He had been from the moment Heart began the lesson on Ryan. Now, it was his turn.
He shifted his feet slightly on the cool tile beneath him, arms relaxed at his sides, trying not to overthink what was about to happen. Not with Heart standing behind him, her presence calm and commanding.
“Male bodies,” she said, circling him slowly, “respond to more than just friction. You already know the penis is sensitive, but there’s a world of buildup that starts elsewhere.” She stepped up behind him. “The base of the spine, the small of the back…” Her hand slid across his lower back and down, palm broad and sure. Ethan inhaled. Her fingers pressed just above his tailbone. “Many nerve endings here. Touch should be firm, not feathery.”
She trailed her fingers down to the top of his buttocks, then brushed along the curve to his hips. He felt his cock twitch with every shift of her touch.
“Outer hips,” she continued, her voice smooth, “especially just above the crease of the thigh. Touch here,” she ran both palms up his sides, just above his glutes, “activates tension. Your body wants to pull inward. It's a precursor to wanting release.” She stepped around to face him. Her eyes met his with clinical reassurance. “Doing okay?”
He nodded. His breathing had already started to deepen. Every inch of skin where she touched felt hotter now.
“Now,” she said to the class, “we build tension.”
Heart reached out and ran her fingertips across the base of his shaft, not stroking, just exploring the area where cock met pelvis. Then she cupped his balls in one hand, cradling them.
“This skin is thinner. Gentle pressure. Rolling contact, not squeezing.”
Ethan exhaled slowly, trying to stay relaxed as her fingers explored. She rolled one testicle gently, then used her thumb to rub the perineum just behind it. “Here we are, perineal stimulation. Not quite prostate. But you’ll feel a pulsing here as he builds arousal.” She turned and picked up the vibrator from the table. Ethan’s eyes locked onto it. It was still damp from Ryan's orgasm.
“Now we apply vibration. But again, not on the tip first. We warm him up.”
She knelt slightly and pressed the vibrator against the space just under his balls. The first pulse hit deep. It wasn’t sharp; it was a warm buzz that spread outward like ripples through his pelvis. Ethan grunted softly, toes curling into the rug.
“There. Immediate reaction. Notice the thighs? He’s tightening his glutes to keep balance. That’s his pelvic floor activating. The same muscles he’ll use to push into orgasm later.” Heart slowly dragged the vibrator forward, letting it nestle between his testicles before moving upward along the underside of his shaft. “You don’t need to stroke,” she said, holding the wand in place mid-shaft. “Let the nerves do the work.”
Ethan could feel the buzz crawling up his spine. His cock felt fuller, harder, like it was swelling with every breath. He fought the instinct to thrust into it. She finally brought the vibrator to the frenulum, just under the head. His knees nearly buckled. “Ah,” she murmured. “Frenulum. High-density nerve zone. One of the fastest triggers for orgasm. So we tease.” She pulled back slightly, then circled the head with the buzzing tip.
Ethan’s mouth fell open. His breath hitched in short gasps. His abs flexed involuntarily.
“He’s close. See the tension in his shoulders? The lack of blinking? His brain is shutting down unnecessary functions. This is the arousal peak.”
The wand pressed directly against the underside of his tip again, this time steady and strong. Ethan groaned deep, desperate. His thighs trembled. The sensation built like an electric coil inside him, tighter and tighter, the vibrator feeding it with relentless waves. Heart's voice barely registered now he heard her distantly: “And now with no stroking, no thrusting, we hold him there…”
His orgasm tore through him, wave after wave. His hips jolted forward once, then again, as thick pulses left his body. He heard it splash onto the floor. His hands clenched. His jaw slackened. Heat flooded his spine and legs. The vibrator stayed in place for just one moment longer, then withdrew.
“Orgasm,” Heart said softly.
Ethan’s breath came hard and fast. His body still twitched in small aftershocks. His skin was damp, tingling everywhere she’d touched.
He felt her steady hand on his chest, grounding him.
“Good,” she murmured, not just to the room but to him. "Now we talk about penetration."
Ryan turned so she was side on to the class as Heart guided Ethan up to the table. Ethan stood between Ryan’s parted legs. Her body was still glowing from her earlier orgasm. Her arms were relaxed at her sides. She met his gaze with a soft, open expression. Heart stood beside them, one hand gently on his hip, the other resting near Ryan’s shoulder.
“This part,” Heart said to the room, “is not about pounding or performance. It’s about learning how to enter, how to listen, and how to respond to what a body gives you.”
Ethan could feel his cock already thickening again, the memory of the vibrator’s deep pulses still resonating through his legs. Ryan’s body was slick, open, clearly ready.
“Ethan,” she said, her voice calm and low beside him, “place your tip at her entrance, but don’t push. Just rest.” He did. The soft heat of Ryan’s folds welcomed him. His breathing deepened, but he held still. “Good. Let her take you in. Don’t go too fast. Let it happen at her pace.” Heart ran her fingertips gently along the base of his spine. Then her other hand brushed Ryan’s lower belly.
“Both of their bodies are speaking right now,” she said to the group. “You’ll notice Ryan is tilting her pelvis upward, not consciously. Her body is searching for him. Ethan’s glutes are tense, but he’s holding position. That’s discipline.” Ryan let out a breath, half a sigh, half a hum.
“Now,” Heart said softly, “Ethan, press in slowly. Just the head. That’s it.”
Ethan exhaled and guided his hips forward. The first inch slipped inside, and he felt the immediate grip of her warmth. Her velvet pressure around his crown. His eyes fluttered closed for a beat.
“She’s welcoming him,” Heart said, stepping slightly to the side to let the group see. “No rush. Watch her thighs. She's still relaxed. No tension in the feet. That tells us she’s not resisting. Ethan,” she said again, firmer now, “give her two more inches. Hold after that.”
He obeyed. The sensation was exquisite. Her body was snug and slick around him, the pull of her inner muscles drawing him deeper. Ryan gave a soft moan.
“There,” Heart said. “Now we have engagement. This is not full depth. It doesn’t need to be. Most of what a woman feels is in the first two to three inches of her tunnel. But don't discount the enjoyment of being fully filled.” She placed a hand on his lower back. “Start to move. Slow strokes. Less than half your length.”
Ethan rolled his hips forward and back in shallow, careful motions. Each glide fed a wave of sensation up his spine. He could feel Ryan tightening with each movement, her breath syncing with his.
“Small thrusts awaken the front wall of the vagina,” Heart explained. “That’s where the internal clitoris begins, sometimes called the G-spot. And it’s more responsive to rhythm than to pressure. Ethan’s cock is stimulating more than just a canal. He’s pressing against a structure built for layered sensation." He felt Ryan shift her legs wider. Her hands gripped the edges of the table. “Now deepen slightly,” Heart instructed. “But keep the rhythm. Let the depth build slowly.”
Ethan sank a bit deeper, and Ryan moaned louder now, longer, richer. Her hips began to meet him halfway. His hands found her waist, steadying them both. Heart’s voice never wavered.
“Notice how her sounds are changing. She’s not gasping or tensing, she’s melting. That’s arousal moving into release. Ethan, keep going. A little deeper.” He pushed in to the hilt this time, and they both groaned. The fullness was overwhelming. Her walls fluttered around him.
“Good,” Heart murmured. “Now slow again. Draw out. Halfway. Then back in.” Ethan obeyed, feeling her cling to him with every withdrawal. It was like she didn’t want to let go.
“Pace matters,” Heart told the room. “Too fast and you skip the rise. Too slow and you miss the tension. Let your partner pull the rhythm out of you.” Ryan’s head tilted back, her mouth open.
“She’s close again,” Heart said. “Ethan, keep your depth. Shorten your thrusts. Focus the movement at the base. Let her ride the edge.”
Ethan was sweating now, muscles taut with restraint. Every part of him wanted to go harder, but Heart’s voice anchored him. Ryan’s thighs suddenly tensed. Then her whole body arched. Her orgasm hit like a wave, her inner walls clenching hard around him. She cried out, loud and clear, hips jerking up to meet his.
“Hold,” Heart said.
Ethan held. The pressure of her climax squeezed him, milked him, and it broke his restraint. He groaned, thrust a few times more, and came with a full-body jolt. His hands clutched her hips. His thighs trembled. He felt the heat of release pulse through him, filling her in waves as she kept clenching and moaning around him. They stayed like that, tangled in stillness, panting. Heart stepped back, giving them a moment to collect themselves. Her voice, finally, softened again.
“Two orgasms. No performance. Just pace, presence, and patience.”
She nodded once. “That,” she said to the class, “is how you fuck someone with intention.”
The room had grown quiet again, but the air was different now, hazier. Ethan stood beside the table, naked, legs still a little unsteady. His cock had softened, but a pleasant ache still lingered low in his belly. Ryan sat up slowly, smoothing her hair behind her ears, her skin still glistening at the collarbone. She looked at him and gave a sleepy, satisfied smile.
They hadn't spoken aloud during the demonstration, only through eyes, touch, breath. But now, as the group began murmuring and gathering their things, he leaned in and pressed his forehead gently against hers.
“You okay?” he whispered.
“Mmm. Better than okay,” she murmured, her fingers brushing over his bare hip. “You?”
He hesitated. “A little embarrassed, I think,” he admitted, voice low. “But… I’m glad we did it.”
Ryan smiled wider and kissed the corner of his mouth. “Me too.”
She swung her legs over the table edge and reached for her sundress, crumpled. Ethan retrieved it for her, shaking it out gently before holding it open. She stepped into it, her bare skin warm beneath his hands as he guided it up her body. She adjusted the thin straps on her shoulders while he knelt briefly to help straighten the hem along her thighs.
“Still shaking,” she whispered.
“Same,” he said with a quiet chuckle, reaching for his own clothes from the floor. Ryan bent to pick up his underwear and offered them to him with a knowing smirk.
“Need a hand?”
He flushed slightly but took them, brushing her hand in the process. “I think I’ve embarrassed myself enough for one day.”
“Oh come on,” she teased, running a thumb along the waistband of his shorts before he pulled them up. “You were amazing. And very, very sexy.”
He pulled the shirt over his head, trying not to grin like an idiot.
Across the room, Heart cleared her throat gently and stepped forward, one hand resting at her hip, the other holding a tablet.
“Thank you, everyone,” she said, her voice still rich and composed. “That concludes today’s session. Ryan and Ethan, thank you for offering your bodies for the demonstration. Live subjects are always better than slides.” A soft wave of applause passed through the room.
“Now,” Heart added with a wry smile, “should Ryan’s birth control mysteriously fail, we may have the unique opportunity to observe the physical and emotional evolution of pregnancy over the next nine months.”
There was playful laughter. Ethan blinked. Ryan turned a shade pinker, but her eyes sparkled with amusement.
“We’d explore not only physical changes but the shifts in sensation, arousal, and connection that pregnancy can bring,” Heart went on. “And yes, we’d cover sex during pregnancy in full, enthusiastic detail.”
Ethan groaned softly under his breath. “She’s never off duty.”
Ryan leaned into his shoulder and whispered, “You did finish in me.”
“Yeah,” he murmured. “For like, the seventeenth time this week. We need to get more condoms.”
Heart approached them as the class filed out. "I'm giving this same lecture to another class tomorrow. How would you like to be my subjects for that class as well?"
Ryan and Ethan both laughed and agreed. Ryan slid her fingers into Ethan’s back pocket and whispered, “Next time, maybe I’m on top.” Ethan laughed, and the ache in his legs reminded him how lucky he was to have her and how ready he was to help with this lesson all over again.