An NFL football game that is (reportedly) played in Hawaii the week before the Super Bowl. Despite several claims that is does in fact exist, no one has ever actually seen it, and it is widely considered to be a myth.
Bubba: "Dude, I was flipping through the channels and I think I saw a Pro Bowl!"
Chazz: "Shut up Bubba everyone know's there's no such thing as a Pro Bowl."
Sorry, I don't watch it either.
The Pro Bowl takes place a week after the Super Bowl, and by then most of America's too tired of football to care, unfortunately.