College girl visits the doctor for an exam…

Doctor: "Take off your blouse and bra."

So the girl complies and there is imprint of a T on her chest.

Doctor says: "What caused this?"

Girl: "Well my boyfriend goes to Texas University and likes to wear his letter jacket when we make love."

Doctor: "Ok you're finished, send in the next girl"

Next girl comes in and the doctor says the same

"Take off your blouse and bra"

Sure enough there is an imprint of a U on her chest.

Doctor says "What caused this?"

Girl: "Well my boyfriend goes to the University of Utah and likes to wear his letter jacket when we make love"

Doctor: "Sounds about right, ok you're done send in the next girl"

Girl comes in and removes her blouse and bra. This time there is an imprint of a M on her chest.

Doctor says: "Let me guess, your boyfriend goes to the University of Michigan right?"

Girl: "No doctor, but I have a girlfriend that goes to the University of Wisconsin."