Cum in your pants

You can't take it any longer. Linda is doing a great job. She is smiling at you and letting out a quiet moan from time to time. You can feel the heat of her pussy lips and how wet she is down there. You put your hands on her ass trying to help her move her hips and now you are pounding her really hard.

"Oh John, how I would want to fuck you right now!" Linda shouts at you.
This pushes you over the edge and you fill your pants with cum. She doesn't stop humping you and this is an amazing feeling.
"Wow, that was fast. Felicia, we've got a first one here!" she shouts across the class.
"John, I see Felicia really got you going there! Good job! You can now go home. Switch!"

That was a great day. You just regret that it ended so fast...