I was working late on a Friday night in the university library. Helping out at the library was my work-study job for the semester. I had been left alone to lock up because Friday was always a slow night. It was closing time and I was checking if everyone was gone. As I trudged up the stairs I noticed a girl sitting and reading on a bench on the top floor. She was wearing a pastel sundress and was engrossed in the book she was reading. As she read her legs had fallen apart and I got a nice glimpse of her yellow cotton panties up her dress. I could see they were darker where they stretched to cover her pussy. I realized that she was wet. My penis stirred in my pants and began to grow.
She startled as I came up and her legs came together blocking my view. She looked at me as I came to the top of the stairs. She had a cute mousy look that was caused by the glasses she wore and the short cut of her black hair. I noticed that the book she was reading was a romance novel. Well, that probably explained the wet panties.
"You're locked in," I said, "I'm Craig the guy who has to lock up."
"Good evening, I'm Jane. I got caught up in my book and didn't realize it had gotten so late," she said.
"I can imagine, I noticed how wet your panties are when I came up the stairs," I said sitting down on the bench next to her, "what on earth is in that book that is so exciting?"
"You saw my w-wet p-panties?" she stuttered.
"Yes, quite by accident on my way up the stairs, but it was pretty evident that you were excited. I'm interested about what was in that book that was so exciting to you." It took Jane a minute to recover from the shock of me seeing her wet panties (I guess looking up a girl's dress is not considered proper), but with a bit of prodding I got her to answer my question.
"Well, I guess I can tell you," she said, "the book is called Victoria in London and at one point the male character, John, is stroking his erect manhood for the young girl so that she can watch him ejaculate. Then the girl, Victoria, shows him her nubile body and pleasures herself while he watches."
"Which part was hotter, John stoking under Victoria's watchful gaze or the naked Victoria being watched by John as she masterbates herself?"
"Both, but John reaching satisfaction while Victoria watched just seemed so hot to me," Jane answered while adjusting her glasses.
"Jane, we are alone in this big library, would you like to see me stroke my penis while you watch," I asked.
"Yes," she answered boldly, "I would like to see that indeed."
I stood, took off my shirt, and slid down my pants. I moved to stand directly in front of where she was sitting and began to rub the front of my briefs. The outline of my penis was clear against my briefs. I rubbed up and down the shaft. "Tell me what you want me to do," I said as I rubbed.
"Take off your briefs and let me see your manhood," she said staring at my groin. I complied and my erect penis popped into view, its head pointed slightly up. Jane stared at my erect penis for a moment with her mouth agape.
"Now stroke yourself," she told me. I gripped my shaft and began to stroke slowly. Pleasure built as I looked down at Jane watching me masturbate. Her hands were flat on her lap and her small breasts pressed against the fabric of her sundress as she breathed.