jm
short for just messing, successor to jk (just kidding) and jp (just playing)
Boy A: Man I don't know how to tell you this but I assfucked your mom last nite. jm
Boy B: I'm gonna shank you...
by c11234 November 30, 2005
Top Definition
jm
Aim shortcut to say just messin'. see jk
johnny: you're gay
joe: :(
johnny:jm
by John Pinkerton December 08, 2005
JM
jelous much?
Speaker 1 : ugly jeans
Speaker 2 JM
by LipGlass June 09, 2009
jm
used on teh internet for "j00r mum"

13370R way of saying ym
omfg jm r 73# u83r 6#3y + j00 oh noes it! OmFgRoFl!
by 8u7r0n r 73# 6#3y mi7 di3 \/( November 22, 2004
JM
N.

An entity or group of individuals that slay pussy at parties and have sex with many women (notorious in New York City)
On New Years, JM got with 18 girls combined.
by Suavvay May 26, 2010
JM
An acronym for the word Jerk Move. See Jerk move.
Ughh...Mark is so dumb, he just pulled a JM on me.
by Kagebunshin March 06, 2009
JM
John Mayer
JM is the man
by octs February 05, 2012

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