A woman goes to the doctor's to have a strange mark on her tummy looked at. The doctor said, "Do you by any chance have a boyfriend who attends Wisconsin University?"

Confused, the girl asks, "Why do ask?"

The doc chuckles, "I'm not just a doctor, I'm also an amateur detective. It looks like your lover likes to wear a sweater with the initial letter of their university emblazoned on the front. It's mildly abrasive quality has been rubbing on your skin."

"Not bad doc!" she says. "Not bad at all!"

"Well..." says the doctor. "Am I right, then? Do you have a boyfriend from Wisconsin?"

She smiles and explains, "Nope, but I've got a girlfriend from Michigan!"