College Nerd Humps Her Desk

I get home from class and need to study. I go to my desk to grab a book... but as I reach up my pussy hits the corner of my desk! It feels really good, but I should REALLY study. I don't want to get hooked on sex and fail out like all the other girls do! But.... I'm sure one break couldn't hurt.... I grind my pussy on my desk trying my best to keep quiet. I orgasm and lay down on my desk once I'm finished. Includes: shorts removal, desk grinding, mouth covering, a camera angle from behind every so often, and no nudity.