Girl: You're wearing eight polos at once with all the collars popped.
Fratboy: I know! You want to do me right now, don't you?
Girl: No, you look like a douchebag. Go change into one shirt, idiot, and don't pop the collar.
"That's cause you're wearing seven fucking shirts with the collars all popped up, you trend following bitch."
The NFL and NCAA have basically put a stop to it by penalizing any player that does it. It is also one of the celebration animations found in EA Sports' NCAA Football 2005. As in real-life, you risk a penalty flag if you perform it.
Don't pop the collar.