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An acronym that stands for, "Laughing my cats off." Originating from the geeky MacRumors forums where a member laughed so hard, his/her cats were scared off the bed.
"Dude, I heard that Apple's gonna release a PowerBook G5 next Tuesday!"

"LMCO"
by joe_schmo February 08, 2007
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Apr 22 Word of the Day
When you eat dirt for the first time and leave your family to build a shack in the woods
Bro since I got dirtpilled on Tuesday I have made sooo many worm friends and made them soo many little houses to get married in. Me? Lonely? No you’re the lonely one u lawn owning freak
by ecogoth December 30, 2020
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2
Laughing My Cats Off: Laughing at something while ones cats are on your bed, causing them to fall/jump off the bed. Therefore - Laughing my Cats off
<Joke>
Hahaha, LMCO!
by Mark Nicholson February 08, 2007
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3
A new term for 'LOL'. Means laughing my cunt off.
Kelly - "LMAO!"
Arielle - " Don't you mean LMCO?"
by Valencia Kreemy September 20, 2008
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