On the desk.

"Right here. Take your clothes off and get on the desk."
The gorgeous X-Woman obliges. Happily removing her costume in front of her class of eighteen year olds. She wriggles out of her costume, releasing her huge, perfect, dark brown tits. She then drops it t the floor and exposes her shaven pussy and well toned ass to her class. With only her boots on she hops up onto the desk and waits for you. Jean clearly did something to turn her on, because you slide with ease into her tight wet pussy. She wraps her legs around your back as she moans. The class watch in stunned silence.

"Feel free to masturbate" You say to the class and most of them (including Jean) take you up on the offer as they watch you pound the teacher on her desk. Storm moans loudly, as you thrust in and out of her pussy. You watch her tits bounce up and down with every stroke. Soon you feel yourself ready to cum. "Kneel down here." You tell her as you pull out. She kneels in front of you and pushes her tits together as you stroke yourself until you cum all over her chest. Storm can't help herself and tastes a drop. "Get back to teaching your class." You tell her. She stands up and carries on where she left off, with some of her class still getting themselves off.

Jean smiles at you as you turn around to leave.

"Who's next?" She asks.