**Biology Lessons**

I never thought I’d be the kind of professor to cross that line, but here I was, sitting at my desk after hours, watching her linger by the door of my office. Emily—tall, pale, dressed head to toe in black, with dark purple lipstick and piercings that glinted under the fluorescent lights. She was the kind of girl who made me feel guilty for looking, but never guilty enough to stop.

“Professor?” Her voice was soft, hesitant. “I had a question about the last lecture.”

I knew what this was. The way she toyed with the hem of her skirt, the way her dark eyes flicked down to my hands before meeting mine again. I’d seen it before—the nervous energy of a student testing boundaries.

“What’s your question, Emily?” I leaned back in my chair, watching her.

She stepped closer, biting her lip. “I… I didn’t understand the part about reproduction.” A small smirk tugged at the corner of her mouth. “Maybe you could demonstrate?”

My cock stiffened instantly. I should’ve shut it down, but fuck, the way she said it—like she *wanted* me to take it too far.

“You know that’s not appropriate,” I said, but my voice was rough.

She smirked. “Then why do you look like you want to teach me?”

That was all it took. I stood, circling the desk, and she didn’t back away. I cupped her face, tilting her chin up. “You sure?”

She nodded, breath quickening.

I crashed my mouth onto hers, and she moaned into the kiss, her fingers tangling in my shirt. Her lips were soft, her tongue shy at first, then eager as I deepened the kiss. I slid my hands down her body, gripping her hips, feeling the curve of her waist under that tight black top.

I broke the kiss, trailing my lips down her neck, and she gasped. “Fuck, Professor…”

“Tell me to stop,” I murmured against her skin.

She grabbed my wrist and dragged my hand between her legs. “No.”

I groaned, fingers sliding under her skirt, finding her panties already soaked. I rubbed her through the fabric, and her thighs clenched. “Already this wet for me?”

She whined, hips rocking against my hand. “Yes, *yes*, please—”

I yanked her panties aside and slid two fingers into her cunt, and she cried out, gripping my shoulders. “*Fuck*!”

She was tight, so fucking tight, and her pussy clenched around my fingers as I pumped them in and out. I curled them just right, and she shuddered, knees buckling. “Gonna come already?” I growled.

“Mhm—*oh god*—”

I added a third finger, stretching her, and her head dropped onto my shoulder as she whimpered. “You like that? Taking my fingers like a good girl?”

She nodded frantically, her breathing ragged. “Please, I want—I want your cock, *please*—”

I pulled my fingers out and spun her around, bending her over the desk. She gasped as I hiked up her skirt and yanked her panties down. Her ass was perfect—pale, soft, just begging to be spanked. I gave her a sharp slap, and she yelped, but then moaned, pushing back against me.

“You’re such a dirty little student,” I muttered, unbuckling my belt.

My cock sprang free, already leaking. I rubbed the head against her dripping pussy, teasing her. She whined, grinding back. “*Please*, fuck me—”

I slapped her ass again, then gripped my cock and sank into her in one hard thrust.

She screamed, her cunt clenching around me like a vice. “Ohmygod—*ohmygod*—”

I fucked into her hard, gripping her hips, my balls slapping against her. The desk creaked under us, and I knew anyone walking by would hear—her moans, the slap of skin, the filthy wet sounds of her pussy taking every inch of me.

“You feel that?” I growled, reaching around to rub her clit. “That’s your professor fucking you stupid.”

She sobbed, her body shaking. “*I’m gonna come—fuck*!”

Her cunt spasmed around my cock, and I couldn’t hold back anymore. I buried myself deep and came, filling her up as she whimpered through her own orgasm.

When I pulled out, she slumped onto the desk, panting. I tucked myself back in, watching her catch her breath.

She turned her head, smirking. “Best biology lesson ever.”

I chuckled. “Next time, we’ll cover anatomy in more detail.”

Her laugh was low, promising. “Can’t wait.”