An incorrect spelling of rofl. Generally employed by individuals who are not well acquainted with chatspeak, but are trying their best to fit in.
Guy 1: hey did you hear that billy shat himself at kevin's party yesterday

Guy 2: Yeah, he must have been so wasted ROTFL! :-)

Guy 1: rotfl? dude wtf, nobody puts in the t, and nobody puts noses on their emoticons! what are you somebody's mom or something?

Guy 2: But -- I don't understand! The phrase is clearly "Rolling on THE floor laughing," which implies that --

Guy 1: stfu noob
by TobyTheRobot March 14, 2008
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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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Stands For:

Rolling Out Terrible Farts Loudly

or
Rolling On The Floor Laughing
"ROTFL!!! Dude, those hot wings were spicy!"

or
"ROTFL!!! That joke was freaking hilarious."
by J0J0_D!V!N!TY//_^ February 27, 2010
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Rolling on the floor laughing. Used when LMAO (laughing my ass off) just isn't enough.
Person A: Did you see Maury yesterday?
Person B: Yes! I was ROTFL!
or
Facebook status: Person A: is ROTFL
by msmetwo April 14, 2009
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if you are talking on AOL Instant Messenger:

Guy 1- Yeh man, and then he died.

Guy 2- Ha ha, im ROTFL.

Guy 1- Man, he died, its not that funny.
by NameBrand October 18, 2006
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Variant spelling of ROFL that only people who aren't familiar enough with chatspeak use. They try to make others believe this is the one to write instead.
Person: Dude, a lvl 50 guy just got pwned by a noob in WoW!

Other person: ROTFL!!

Person: It's ROFL! Don't you know chatspeak at all?

Other person: What's chatspeak?

Person: wtf are you on here for if you don't know?
by xzfs April 25, 2008
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