Further maths

Having visitors during lectures was actually not too uncommon since anyone could use adults, they sometimes brought in somebody to fuck. If not, students had sex among themselves, used the teacher, or simply masturbated.

When you enter, most of the class is already there. One of the girls is writing something on her desk while two boys use her: one underneath, forcing her to bounce on his cock, and the other making her suck his dick.

Hannah goes towards a desk, placing her stuff on the sticky surface despite several drops of what was probably lube and girl cum. She motions for you to sit next to her. Looking to the front, Professor Lively is scribbling some formulae on the whiteboard. She is a lady of average height, probably only a few years out of college, wearing a transparent black shirt and short grey skirt. Both were stained in several places, though none look particularly fresh.

You lift Hannah onto your lap, facing away from you. She leans back on your chest for support as your hard member slides in and out of her slit. She only has some cum in her hair, while the rest of her body and clothes look untouched.

Looking around the classroom, most students are engaged in some sort of sexual activity. While it's mostly just girls sitting on the cocks of male students, there are some other things going on, like the girl in the corner, and a 69 happening on the floor between two older girls.

Ignoring all the sex, the teacher calls the class to attention and begins teaching. While she was reviewing the previous day's assignment, a boy walks up to her and sticks his dick in her vagina and just goes at it. The teacher manages to handle the distraction like a pro, being able to walk around the front and answer questions asked by students while being used by him. Eventually he finishes, and cums in the teacher's open mouth while she is talking. She pays no attention to this of course, and licks up some of the residue like it was second nature.

You start getting close to cumming, and Hannah notices this. Getting off your cock, she turns around to face you.

"You about to cum?" She asks.

"Yeah," you answered.

Standing up, you jack off your cock above the her and ejaculate all over her. Drops of your spunk goes on her hair, notebook and desk, making several satisfying splats as they land. You give her left breast a quick squeeze before turning away.

"Jack?" The teacher adresses you sternly. "Can you come to the front and solve this geometric sequence on the board?"