RBF
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"
by Michael D Wolf February 07, 2009
Top Definition
RBF
Resting Bitch Face

A person, girl especially, whose regular facial expression makes them look like a bitch.
Fuck, major RBF coming your way. I'd tap that.
by supersrs August 18, 2009
Resting Bitch-Face Syndrome. When a woman seems like she's always crampy and full of shit even when she's just sitting down doing nothing and resting, thinking about good times.
A- "That woman just gave me a death stare."
B- "Nah, that's her normal face. She's got RBFS."
by Carlo89 June 09, 2015
RBF
This is the abbreviation for "Really Bout to Fight."
Wow... they're RBF right now!
by Smiley 777 May 26, 2016
RBF
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!
by Smiley 777 May 26, 2016
RBF
Root Beer Float
Hey man, wanna go to weinerschnitzel and grab an RBF?
by Applesauce Scrotum December 21, 2011
RBF
Short for "Redbull Friday". A day in which you drink double your usual Redbull consumption.
It's RBF. Let's mainline it.
by Kipps November 01, 2009
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