I'm a middle-aged math teacher in HS and quite frankly, not sexy but flat-chested, skinny and wear large glasses and short hair. One of my slow male students, Ernie, a nice looking teenager, never stops staring at my ass so I started wearing skirts that are a bit snug on my butt. His grades were so poor I asked him to stay after class for more instruction. I would talk and write equations on the black board and for the first time heard him masturbating loudly behind me.

With mixed emotional reactions I admit it was a turn on for me, hearing him even moan here and there, knowing he was getting off on my only physical sex attribute. The first time he did it, I waited to hear him zip up before stopping my board writing and turning around. After he left, I noticed a few large streams of his sperm on the back of a chair and the floor. I touched some of it with my finger and smelled it. It was a heavy musky, clorox-odor but still turned me on.

Post menopause, I took some of his sperm and masturbated with it, rubbing it hard on my genitals until I had an orgasm. The same scene has now taken place three times but I feel that will never let it play out further. Maybe after he graduates next year I will let him fuck me. I certainly think about it a lot. I imagine him sliding his penis deeply inside me until he comes hard into me and I take it all.