What is Lmco?
1.
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"
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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!
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3.
A new term for 'LOL'. Means laughing my cunt off.
Kelly - "LMAO!"
Arielle - " Don't you mean LMCO?"
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4.
definition: laughing my cum off
guy1: dude. look at that girl. shes hot.
guy2: yea. lmco.
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5.
laughing my cock off
joe: my girlfriend just dumped me
mike: lmco
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6.
laughing my crotch off
that joke dave chapelle just told made me lmco