The end of the semester was rolling around, and I had been studying hard all month.

The week before the big math exam, I went to my teacher’s-assistant’s office. I didn’t know I was going to get to study some new material. My T.A., Karen, was wearing her usual thick glasses, yet today she looked oddly attractive. Her office hours were in the morning. She was sitting behind her desk wearing a tight little cashmere sweater that squeezed an outline of her small breasts.

She was petite. She had large eyes, child-bearing hips, and a china-doll face. We began to go over last year’s test. The office was small, and it was a tight fit with both of us behind one desk. When she leaned over to correct my work, her lithe body rubbed across mine, and I smelled her auburn hair. Her warm body gave me an instant hard-on. I had lost all power to study by the time we started the next test, but I had no desire to leave. She was so eager to help me whenever I faked a question. She told me she liked having someone come to her office — usually she was all alone.

During the hour, the room began to heat up with the morning sun beating through the Victorian windows. I took off my sweatshirt and rolled up the sleeves of my white T-shirt. She felt the heat, too, but was trapped inside her sweater. I was turned on by the thought of how sweaty Karen’s boobs must be. I held a book over my erection when I asked a question about a graph. She leaned over to explain, her thin sweater outlining her beautiful breasts. She shifted her weight and began drawing on the book, which put pressure on my cock.

The strokes of her pen tightened my stomach. I struggled to contain myself, and I began to sweat. The harder she pressed on the book to keep it steady, the harder I got. Instinctively, I placed a hand on the small of her back. I was lost in the swaying of the book. I realized she had stopped talking, but the book was still moving! I opened my eyes to find her kneading the book into my groin. Her eyes were closed and her mouth partially open. I placed a hand on one of her breasts and cupped it through the thin sweater. I didn’t feel a bra, but only soft cashmere separating her breasts from my hand. I used her sweater like a washcloth to massage her warm titties while she worked the book into my cock.

I removed the text from her hand and let it drop. I could feel her heart pounding. I swung her legs over my lap. She sank into my trapped erection. My hand drifted up her sides, under her sweater, to her bare titties. She let out a moan as I cupped her hot flesh. I rubbed her nipples into two little nuts. Her hands stroked the back of my neck as she pressed her pelvis down on my cock. I was so hot I needed to fuck. She wrapped her legs around my waist as I picked her up and placed her on the desk. I removed her glasses. She bent her head down. I asked her if she wanted to do it, and she breathed a little faster. One of her shaking hands grabbed mine.

She nodded her head beneath a curtain of hair. I lifted her chin and our tongues met in her warm mouth. She placed her hands on my shoulders as I rolled up her gray skirt, exposing wet underwear. Her dark pubic hair was visible under the white cotton, her nervous legs contrasting with the dark mahogany. I unzipped her skirt, slid it from her plump ass, and let it fall. She sat on the desk in her tight sweater and white panties, like a schoolgirl getting dressed in the morning.

I pulled the panties off her creamy thighs. She pressed her forehead against mine. She watched as I unbuttoned my jeans and released my cock; it slapped against my waist like a hot spoon. She ran her small hands down my six-pack. I walked my fingers over her thighs and let my left hand ease around her ass.

She closed her eyes and waited for my hard cock. I gripped the base of my pole and ran my cock-head over her wet slit. She held my shoulders as I slowly entered. She took in a small breath as I went deeper into her velvety pussy. She was super-tight, her cunt sucking my shaft like a vacuum.

I slid halfway in, then slowly pulled out. I worked several deep strokes, until her hot pussy could clamp down on my entire cock. Her breasts rose with each breath, the cashmere outlining her hard nipples. Her hairline glistened with sweat.

I felt her pussy contract spasmodically, and I increased my thrusting. She moaned with her mouth open, saliva reflecting off her lips. I lifted her white ass off the table as I drove my cock into her hot pussy like a piston, her pubic hair sparking my nuts. She arched her back. I was eye-level with her hard nipples. She tossed her hair and gasped as I dragged my cock through her hole.She squeezed my cock like a tight fist as an orgasm shuddered through her pussy.

I pulled out from her wet box and my load flew over her sweater and thighs. I ground her wet vagina into my balls. She looked up as I massaged my come through her wet snatch.

Her big eyes grinned. She was the best T.A. I ever had, and I never skipped out on office hours again.