Acronym, derived from LOL (laugh out loud) LMAO (laughing my ass off) and ROFL (rolling on floor laughing).
LMAOROTFLBTCSTCNDBFOOTWI FOAGWLLBGWTHROOTSAIAKBAYB: Laughing my ass off rolling on the floor biting the carpet, scaring the cat, nearly dying by falling out of the window in front of a guy who looks like Bill Gates, who then horrified runs out on the street and is accidentally killed by a yellow bulldozer.
LMAOROTFLBTCSTCNDBFOOTWI FOAGWLLBGWTHROOTSAIAKBAYB: Laughing my ass off rolling on the floor biting the carpet, scaring the cat, nearly dying by falling out of the window in front of a guy who looks like Bill Gates, who then horrified runs out on the street and is accidentally killed by a yellow bulldozer.
Bob: So then I says 'that's not a cow, it's my sister!'
Sam: omg... LMAOROTFLBTCSTCNDBFOOTWIFOAGWLLBGWTHROOTSAIAKBAYB
Sam: omg... LMAOROTFLBTCSTCNDBFOOTWIFOAGWLLBGWTHROOTSAIAKBAYB
by Pasticmouth June 10, 2005
Laughing my ass off rolling on the floor laughing biting the carpet, scaring the cat, nearly dying by falling out of the window in front of a guy who looks like Bill Gates, who then horrified runs out on the street and is accidentally killed by a yellow bulldozer.
Timmy: I went to a fight the other night and a hockey game broke out.
Jimmy: LMAOROTFLBTCSTCNDBFOOTWIFOAGWLLBGWTHROOTSAIAKBAYB
Timmy: ...my "lol" is insignificant
Jimmy: LMAOROTFLBTCSTCNDBFOOTWIFOAGWLLBGWTHROOTSAIAKBAYB
Timmy: ...my "lol" is insignificant
by ohemgeeitscor November 17, 2009