3 Chicks walk into a doctors's office

OK, there are these three chicks who walk into a doctors office.  The 
first one go in for her examination.  Her doctors goes, "Well, everything 
is alright except that you have an "A" on your chest.  The girl says that 
she has a boyfriend that goes to Alabama and that when he makes love to 
her he likes to wear his college sweatshirt.
The second girl goes for her examination, and the doctor goes, "Well 
everything is alright except that you have a "M" on your chest."  The 
girl states that she has a boyfriend that goes to Michigan and when they 
make love, he wears his sweatshirt.
The thrid girl has her examination, and afterwards the doctor goes, 
"Well, everything is alright except that you have a "M" on your chest, 
let me guess you have a biyfriend that goes to Minnesota?"
The girl goes, "Nope, but I have a girlfriend that goes to Wisconsin!"