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A common internet chat acronym meaning "Jacking My Dick Off." An analogue of LMAO, "Laughing My Ass Off."
Girlfriend7530: You wanna come over this evening?
Boy2458: Can't. J.M.D.O.
by honkersale May 17, 2009
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Jul 13 Word of the Day
a phrase chiefly used in northern England.

it is a contracted form of "it'll be reet", where "reet" means "alright" or "OK".

living your life according to "be reet" is the only way to find happiness in life.
Geoff: "ZOMFG a just hopped off the buz n me 'ouse is burnin' down n me Deirdre's in there dyin!"
Jack: "Be reet."
by Tommmmmmmmmmmmm May 06, 2007
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2
Jizz/Jizzing/Jizzed My Dick Off. Used when something is sooo dope there's no other words left to use.

Can be used when describing how something looks, feels, sounds, tastes, smells..
Guy1: Dude did you see the new Gorillaz video, Stylo?
Guy2: YEAH YO, I WAS JMDO

AnotherGuy1: Hey, have you heard of Buckethead?
AnotherGuy2: Yeah man, every time I listen to his music I JMDO
by ATCQ April 27, 2010
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