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an acronym for laugh my cock and balls off.

lmcnbo originates within the deepest rings of the outer realm. kang xai'qui the elden partook in the great cbt of 1267 b.n. where he was challenged by yung pi'uan for the throne. xai'qui accepted the challenge, laughing at the audacity of bi'uan's challenge. when the great cbt began, li'uan started strong, smashing his cock with the broadside of an axe. xai'qui, forever the master, attached jumper cables to his fat nutz, while garroting his massive fucking shaft. hi'uan followed up with a measly rock smash to the left balls, leaving xai'qui hysterical. to ensure victory, and to impress his peoples, xai'qui went for his best move yet. he drove a massive fucking fisher's price toy van over his own balls. in his recklessness, xai'qui's cock and balls were crushed and tore completely from his crotch. ji'uan became ruler, and the story of xai'qui went down in legend. thus, lmcnbo was birthed.
YOOOOOO BFFFUUHHGAHAGAHAHAHAH LMCNBO DUUDE HAHAHAHAHAHAHA
Laughing My Cow Bell Off!

A parody of the texting abbreviation for lmao (laughing my ass off) used in the facebook user group "I gotta have more cowbell."

Funny way to let the person you are texting with know that you think what they said was not just comical but hilarious!
texter 1. Why did the cookie go to the hospital?
texter 2. I don't know why did the cookie go to the hospital?

texter 1. Because she felt crummy!
texter 2. LMCBO!!!
lmcbo by mortgagecommitments March 30, 2010
Related Words
lmcnbo lmcbo LMNBO
Laughing My Nerdy Butty Outloud
CHAT ROOM;

Nerd #1: Hey, man, how many Celsius is right now...

Nerd #2: lmnbo... hell, I have no clue...
Lmnbo by Yoshimaticz May 16, 2011
LMNBO. Girl, that was so funny!
LMNBO by Retnuh1 June 6, 2010
Lmcbo= laughing my crazy but off
lmcbo by dumbblondegirl11 March 26, 2014