It's Only Biology

You have passed out looking through a biology book in college and teacher has gone to get the nurse, when you wake up Dana is stood above you. She can't believe you have passed out from looking a book and wants to know what page you were looking at, she bends over facing away from you to look at the book and you get a great view of her ass and panties. It doesn't take long for the blood to start rushing from your head again but this time it's headed straight for your cock!