He Fucks Redheads. The origin of this comes from the early days of the vikings, when all the most desirable females were red headed. It was originally Ha Frook Rutabaga, but over the years it has developed into what is known as today.
Blonde chick: Yo that dude is damn fine! Do you think he'd go for me?
Friend: No, HFR...
Blonde chick: Shits.