Top Definition
rolling on the floor laughing my fucking ass off

usually used in internet interaction, when someone says something funny.
Person 1:
I don't have to spellcheck eevrything

Person 2:
ROTFLMFAO
af tim 29. december 2002
12 more definitions
Rolling On The Floor Laughing My Fucking Ass Off. Cyberchat. One states something really funny and the other(s) reply with ROTFLMFAO
User1: There once was a man from Nantucket...

User2: ROTFLMFAO
af Philism 28. januar 2003
Stands for rolling on the floor laughing my fucking ass off. Also known as post '04 election syndrome.
Everytime I think of that guy outside the Columbus, Ohio Victory '04 Bush tour stop, I'm ROTFLMFAO at how he kept chanting "Four more days."
af Nikthenyetminder 17. november 2004
rolling on the floor laughing my fucking ass off

commonly used on cell phones and msn
Guy 1:DUDE MY DOG JUST TOOK A SHIT ON THE FLOOR!!!
Guy 2:ROTFLMFAO
af 15marsht 6. oktober 2008
Rolling on the floor laughing my fucking ass off
That movie i saw yesterday made me ROTFLMFAO
af Conan Edigawa 18. september 2008
Rolling On The Floor Laughing My F***ing A** Off

when you are laughing so hard that you cant just say ROTFL or LMFAO
That was so funny hahaha ROTFLMFAO
af TwilightYolo 29. oktober 2014
Rolling on the floor laughing my fat ass off.
Person 1: I liked the Kill Bill movies.

Person 2: ROTFLMFAO
af AMoniker 22. august 2010

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