Chatroom acronym for "Roll on the floor laughing and vomiting in a bucket"
Jhon: I was using Cindys pencil as an earbud and she was licking it!!! Ewww!!

Paul: ROTFLAVIAB!!
by Ballas June 22, 2004
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Correction, "Roll on the floor laughing. A vagina in a bucket???"

Originally used for the "Vagina in a bucket" joke. Has morphed into everyday use for any strange joke.
person 1: ...then I found out it was a vagina in a bucket!!
person2: ROTFLAVIAB???!

person 1: what's the difference between a truck full of babies and a truck full of sand?
person 2: what?
person 1: you can't pick up sand with a pitchfork!
person 2: ROTFLAVIAB!!!!!!!!!!!!
by CeliaMay December 12, 2005
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