A lass goes into the doctor's office for a checkup.
As she takes off her blouse, he notices a red "H" on her chest.
"How did you get that mark on your chest?" asks the doctor.
"Oh, my boyfriend went to Harvard and he's so proud of it that
he never takes off his Harvard sweatshirt, even when we make
love," she replies.
A couple of days later, another lass comes in for a checkup.
As she takes off her blouse, he notices a blue "Y" on her chest.
"How did you get that mark on your chest?" asks the doctor.
"Oh, my boyfriend went to Yale and he's so proud of it that
he never takes off his Yale sweatshirt, even when we make
love," she replies.
A couple of days later, another lass comes in for a checkup.
As she takes off her blouse, he notices a green "M" on her
chest.
"Do you have a boyfriend at Michigan?" asks the doctor.
"No, but I have a girlfriend at Wisconsin.
Why do you ask?"