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Someone told me Michelle deserved to win Pop Idol, and I was LMFAO
by Hmm. December 23, 2003
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Laughing My Fucking Ass Off. A term used when you are in tears from laughter. Used mostly on instant messaging.
Ben: I did the stupidest thing last nite, i was running down the street with Alex and I ran straight into a pole, i ran so hard i think i dinted it!

Kyle: U are such an idiot. l.m.f.a.o!
by Jessie_xxx November 19, 2005
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No, this isn't the fucking acronym.

A terrible band that takes a synthesizer and 2 microphones and a computer and makes millions of dollars from poorly written lyrics and said tools. Their hit song, Party Rock Anthem, neither sounds like a party or rock, more like a rave or hemorrhaging piece of shit. Do not listen to them. Their only half-decent song is I Am Not a Whore, and that's like picking the cleanest dirty shirt in a shit-pile.
Jim: "Hey did you hear the new LMFAO song?"
Al: "No I have a taste in music and you sound like a 13 year old girl."
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1. Laughing my fucking ass off

2. Name of a Hip Hop band with currently 6 songs on one album called LMFAO. Their Website is http://www.myspace.com/lmfaouno
1. "I'm a newfag can someone tell me how to green text?"

">LMFAO"

2. "I just listened to Yes by LMFAO"
by Anonymous@Anonymous.com August 24, 2008
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When you are laughing to the point that your (expletive) rear end is being forcibly removed from the rest of your body.
rear end1: why did the chicken cross the road? to get to the other side.
rear end2: thats a good one. lmfao. im laughing so hard im being removed from the rest of my body.
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