A doctor visits a girls' college to do medical checkup. The first girl comes
into the room and the doctor asks her to take off her clothes. She takes them
off and an "H" mark appears on her chest. The doctor is puzzled and asks,
"What's that thing?" The girl replies, "I have a boyfriend who studies at
Harvard. He likes the college T-shirt so much that, when we make love, he never
takes the shirt off."

A second girl comes into the room. When she takes off her clothes, the doctor
is shocked to see yet another "Y" mark on this girl's chest. When the doctor
asks her about it, she says, "My boyfriend studies at Yale, and you know, he
really likes the Yale T-shirt that he insists on wearing it when we make love."

A third girl comes in. This time, she has an "M" mark on her chest. The doctor
just can't wait to say, "So... Let me guess. You must have a boyfriend studying
at Michigan... Right?" "Um..." the girl replies with her cheeks pink. "My
girlfriend actually studies at Wisconsin..."