rotfl 

rolling on the floor laughing

rotfl by dawn June 15, 2002

rotfl 

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

rotfl by TobyTheRobot March 14, 2008

ROTFL 

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."

ROTFL by J0J0_D!V!N!TY//_^ March 10, 2010

ROTFL 

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

ROTFL by msmetwo April 15, 2009

ROTFL 

Roll On The Floor Laughing

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.

ROTFL by NameBrand October 18, 2006

ROTFL 

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?

ROTFL by xzfs April 26, 2008

ROTFL 

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)

ROTFL by Iain Dalton October 10, 2008