"bowel movement" but in this case used as an adjective when being annoyed for fed up with a certain person.
Ellen has been such a BM lately, shes on my nerves.
by Seamus O'Connell April 30, 2008
Slang for for a BMW, notably used in the Notorious B.I.G.'s "Big Poppa"
Biggy: Drop top BMs, I'm the man girlfriend
by si11y f4ce August 10, 2008
bad mouth
Person 1: Hey dude I went on your account last night
Person 2: I hope I don't get banned...
Person 1: Sorry bro I BM like crazy..
by aDoctorOctopus February 12, 2012
Baby momma
I'll call you back, my BM just got here
by draculasBM November 22, 2010
baby mama
shes my bm but shes always tryen 2 control me n shit
by acommitedchurch August 25, 2009
Short for BMW
Mostly used in rap songs.
"Officer Bird's on his way, and I don't wanna see him
could you please give me the keys to the BM?
See, I didn't want to gank you
but don't make me bank you, thank you
Tried to get yo the hood, and you might guess
that a fool like me woulda shot Cyrus
Incognito, Ghetto Eagle
Saying, "Fuck, where did he go?"
I bust me a left from Rubellon. Park
The 735 and I'm bailin"

ghetto bird - ice tea
by AlphaQ May 08, 2006
Used commonly in online games such as StarCraft, WarCraft, etc.

BM is used when someone is of repeated annoyance and uses such bad language such as "Fuck you", "Damn you", "Shut the fuck up", "Go slit yourself", etc. etc.
In most cases people like this usually need a good kick and a warning.
Gosh, John is so BM. Yesterday he was observing one of my games and he went a fucking nuke rush on me...that is so BM..

Other Guy: Yeah, let's ban him from our channel cause he's done that to me and like 5 other people.
by Frank G. November 20, 2004

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