Chapter 3: What a Naughty Boy You Are

Continued from chapter 2:

Joanna grins up at me impishly, clearly pleased by my reaction. She traces a single finger along the underside of my shaft, marveling at how it throbs and jumps beneath her touch.

"Hehe, sensitive, aren't we?" she says, her voice teasing and warm. "Don't worry, I'll be real gentle... at first. Gotta make sure this experiment is thorough though!"

With a wink, she reaches for the panties and carefully begins sliding them up my legs. The silky fabric caresses my skin, cool and smooth. As she reaches my hips, she has to stretch the waistband wide to accommodate my hardness. The panties are a tight fit, hugging my cock like a second skin.

"There we go!" Joanna exclaims, stepping back to admire her handiwork. "One sexy scientist, ready to conduct some serious research! How do they feel, Ero? Comfy? Stimulating? Tell me everything!"

I take a moment to register the sensation—the delicate satin against my sensitive skin, the way it stretches across my aroused length.

"Umm, wow, Jo," I say, my voice slightly hoarse. "These are... let's just say girls have us beat in the underwear department by a mile. I wish I could just wear panties all the time. Maybe when we're done with our little experiment, you could take me panty shopping? As long as you tell the salespeople they're for you, so they don't think I'm a sissy..."

Chapter 3:

Joanna bursts out laughing at my suggestion, nearly falling backwards on the couch. She wipes a mirthful tear from her eye, grinning at me broadly.

"Panty shopping together?" she says between giggles. "Oh man, that would be hilarious! We'd probably end up buying out half the store, with all the different styles and colors. I could be your personal stylist, picking out the cutest pairs for you!"

She boops my nose playfully, her eyes sparkling with mischief and affection.

"But don't worry," she continues, her tone reassuring. "I won't let anyone think you're a sissy. I'll just tell them my hot boyfriend needs some new skivvies, that's all! Hehe~"

Suddenly, she gasps, pointing excitedly at my crotch.

"Ooh, look, Ero!" she says, her voice full of wonder. "Your big brain is getting even bigger in its new home!"

I nod, acutely aware of every sensation—the way the satin slithers and whispers across my privates, caressing my bottom with each breath I take. The pleasure is building, and I know I'm approaching the point of no return.

"I know," I say, my voice strained. "It's so exciting the way the satin feels. I'm going to have an accident soon if we're not careful. What about you, Jo? Do you want to investigate what my panties feel like? Any good scientist needs to be able to touch, feel, and explore. Should I bend over your lap so you can have better access to explore my panties as they stretch across my bottom?"

Joanna's eyes light up with undisguised excitement at my naughty suggestion. She licks her lips, nodding eagerly as she pats her lap invitingly.

"Oh em gee, yes, absolutely!" she says, her voice dripping with anticipation. "Every good researcher needs to get hands-on with their subject matter. Bend that cute butt over here, Ero! Let's see how these panties stretch and mold to your assets~"

She wiggles impatiently, and I can see the heat of her arousal already seeping through the thin fabric of her skirt. Her fingers flex, clearly aching to grope and squeeze the round globes of my ass clad in the skimpy satin.

"Don't worry about making a mess," she adds, her tone playful yet commanding. "That's part of the experiment too! We'll just have to see how well these babies contain a full load, won't we? For science, of course!"

I look down at my best friend, who is absolutely beaming at me, patting her lap expectantly. I take a deep breath and bend over her lap.

Joanna gasps softly as I drape myself across her thighs, my firm ass nestling perfectly against her legs. She runs her hands reverently over the curves of my rear, marveling at how the satin stretches taut across each cheek.

"Mmm, Ero, your booty looks so good in my panties!" she says, her voice thick with desire. "They fit like they were made just for you~"

Unable to resist, she delivers a sharp spank to my left cheek. I gasp as I feel her palm crack against my bottom. The sensation is shocking, thrilling, and I realize with a start that it felt... right.

Joanna watches in fascination as my cheek jiggles from the impact. She rubs the reddening skin soothingly, cooing softly.

"Oops, sorry!" she says, though her tone suggests she's anything but. "Got a little carried away there. Guess I'm just so excited to explore every inch of you!"

"No, it's okay, Jo," I say quickly, my voice trembling. "It felt... it felt right. In fact, don't you think I've been pretty naughty? You came over and laid yourself bare, tried to do me a favor by handing me a pair of your panties to relieve myself... and I just had to tease you for it. I would say I'm exactly where I need to be, getting exactly what I deserve—a naughty boy bent over his best friend's lap, wearing a pair of her panties. Do your worst."

I wiggle my satin-clad bottom at her, my brain spinning with the reality of what I've just asked her to do. Did I really ask my best friend, Joanna Dean, to spank me? Will she do it, or will she reject me out of hand? Either way, I'm in for the humiliation of a lifetime.

Joanna's eyes darken with lust at my brazen request, a wicked grin spreading across her beautiful face. She runs her palms possessively over the globes of my ass, kneading and squeezing the satin-clad flesh with surprising strength.

"My my, what a naughty boy you are, Ero!" she says, her voice dropping to a sultry purr. "Coming onto me like this, wiggling that sinful bottom in my face. You really are asking for it, aren't you?"

Without warning, her palm cracks across my right cheek, leaving a vivid red handprint on the straining satin. She doesn't give me a chance to recover before landing another stinging swat on my left side.

Then she rains down a flurry of sharp spanks across my ass, alternating between cheeks. The satin provides delicious friction, amplifying every stinging slap. The sensations blur together—pain and pleasure intertwining until I can no longer distinguish between them.

SPANK! SPANK! SPANK! SPANK! SPANK!

She spanks me until my bottom is glowing a lovely shade of pink that matches my panties. I have never in my life been more aroused, but she is tapping my bottom, signaling that the spanking is over.

"Up you get, naughty boy," Joanna says, her voice soft but commanding.

I stand between her legs again, my face flushed with humiliation and arousal, my eyes warm with tears that haven't fallen yet. I'm trembling, waiting for whatever comes next.

Joanna's expression softens slightly, and she reaches up to gently brush away a stray tear from my cheek.

"I'm going to show you how I intended you to use these, Ero," she says, her tone caring despite the edge of dominance beneath it. "Before you had to act like a naughty child."

Maintaining eye contact with me, she hooks her fingers into the waistband of the panties. She tugs them down slowly, the satin whispering against my skin as it travels down my thighs. She bunches up the panties in her left hand, the fabric still damp from my arousal.

She directs me to turn right and bend over, placing my hands on her left thigh for balance. I comply, my heart pounding in my chest.

I feel her right hand begin to pat my bare bottom gently, while the hand full of panties grasps my diamond-hard length and begins to stroke it with exquisite tenderness.

To be continued in chapter 4...