Text talk or IM lingo for "Rolling on the floor laughing." ROTFL is the same as ROFL. No one really uses ROTFL or ROFL, most people just use LOL or LMAO or LMFAO.
uglybitch1234imawhore: ur a loser
5678imasturbate: ROTFL
uglybitch1234imawhore: dude, thats not even funny, and ppl dont even use rotfl anymore, they use lol
5678imasturbate: kk then LOLOLOL IM HIGH
'uglybitch1234imawhore has signed off.'
by 1234 I Declare a THUMB WAR December 22, 2008

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An older form of ROFL that people now assume to be a new, clueless form. ROTF is documented from 1990{1}; ROTFL from 1991{2}.

{1}: <http://www.catb.org/jargon/oldversions/jarg211.txt>
{2}: <http://www.catb.org/jargon/oldversions/jarg231.txt>
Tycho: Daikatana.
Gabe: ROTFL
Tycho: ROTFL

(From Penny Arcade)
by Iain Dalton August 16, 2008

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Remember of the fat lady OR Rolling on the floor laughing.
( Abbreviations ) Similar to Lmfao
Bob: ROTFL?
Sue: Yeah... I had nightmares!
Bob: Me too!

OR

Shrek: hey.
Donkey: hey...
Donkey: Guess What?
Shrek: What?
Donkey: Chicken Butt!!!
Shrek: ROTFL!!!
by Jonna99 June 06, 2009

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Rolling on the floor "not laughing". A Retarded or bored person.
Chris:Wazzup John. John:Ur a Noob. Chris:Rotfl
by J.ontee April 15, 2008

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