A fork of Rural Dictionary
Royal Butt Fucker. Someone who is a butt fucker but is so much worse at life than an ordinary butt fucker so he is than named it royally
"Holy crap your bein such a RBF right now"
This is the abbreviation for "Really Bout to Fight." This is commonly used in and around the Jersey shore in New Jersey.
Wow... they're about to RBF right now!