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4.
The superior form of rofl. The b is part of the b phenomenon that occurred in the late 1990s (created by hohoh0 and Aeurix incorporated); the first b-word was associated with the famous quaker known as Bolph. No words in the dictionary can give a definition of the b, it is simply known as perfection.
AHAHHA THATS BOFL

BOFL!!!!!!!!!!!!

BOFL ME UP WHY DONT YOU???

YES ID LIKE TWO CUPS OF BOFLES TO GO PLZ!

20:56 pHillyDMAN: guu is tryin to laugh for the first time and she sounds like some ROBOT and all the pokutes jump out and start laughin with him and weda, IT MAKES NO SENSe and im boflin like am ofo ahbbeeuauhehuehueuh

23:35 OLIVERt16: like that acrobatic pup had the most amazing moves ever,, william and I were bofling when he jumped like 30 feet in the air and served the ball while upside down

by hohoh0 February 02, 2003
 
1.
burst out fucking laughing
BOFL Bro That was hilarious!
by lala1722 June 20, 2011
 
2.
BOFL: Directly translated as a bumful of fairy liquid.
To contain washing liquid between one's buttocks.
Spectator 1: That man is blowing bubbles from his ass!!

Spectator 2:Ah yes, that's a textbook case of BOFL.
by Daddybayor October 11, 2010
 
3.
Bubbling on the Floor Laughing. A less exaggerated version of ROFL - Rolling on the floor laughing. It's more of a chuckle version to that.
Last night was a good time! - BOFL!
by Scor Chicago March 20, 2013