ROFL is an internet accronmym for Rolling On Floor Laughing, and like all things internet it has adapted to nerd culture and has taken on new real-life use, though usually in a satirical way.

ROFL can be merged with other accronyms to created super l33t acronyms that "r0x0r y0ur b0x0rs" per se. Some examples of the merged accronyms are as follows:

ROFLAARP: Rolling On Floor Looking At Assorted Rodent Pornography

or

ROFLEW: Rolling On Floor Laughing whilst Eating Waffles
<noob> Yo dude, these waffles are sweet!
<admin> rofl. Are you ROFLEW?
<noob> Nah dude! I'm totally eating them at a table.
by urban_dictatator June 26, 2004
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Rolling On The Floor Laughing.

Rhymes with 'waffle'.
ROFL!!!!1 u r teh FUNi!11 i lub u <3
by Bastardized Bottomburp September 29, 2003
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An acronym for "rolling on the floor laughing". Typically a stronger, but equally as often ill-used version of wordlol/word.
by Trafton August 02, 2003
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ROFL is short for: Rolling on the floor laughing. Straining the fact that it is a lot more funny than your usual lol.
by Genocide April 11, 2003
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Rolling On Floor Laughing

laughing more than simply LOL
used on its own normally.

rofl :)
by Semajal October 29, 2002
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Rolling on the floor laughing. Typically used by people who are too lazy to press the rest of the keys on their keyboard needed to communicate in English.
Person1: ...and then I hit my head.
Person2: rofl!
Person1: Shut up. You sound like a friggin' twit. I hereby revoke your right to speak my language.
by JDFSKL March 02, 2004
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ROFL is an abbreviation for 'rolling on (the) floor laughing', usually used in a similar context as 'LOL'.
ROFL is usually used with text talk and/or incorrect grammar.
LOL !!! That joke left me ROFL!
Person 1: (Insert funny joke here) Person 2: LOL! Person 3: ROFL!!!!!
by inkybinky3 December 01, 2013
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