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1.
YMB
You mad brah
Tom: Man smd
Jim: YMB?
Tom: Nah, I'm just playing.
by Rod17 July 06, 2011
 
2.
ymb
You Manc Bastard
Person 1 : You are an idiot
Person 2 : Shut up ymb
by suzzehhh August 31, 2011
 
3.
YMB
Acronym for "Your Mother Blows"
Insulting Term to be used on your friends while referring to someone of an undesirable nature.
YMB That Homeless Guy over there.
YMB That Dude with the Bad Hair club for Men weave.
YMB That jackass over there with the Yankee Tattoo, Yankee Hat, Yankee Shirt, Yankee Sneakers and Yankee License Plate in his decked out Yankee Car.
by MyMan Savage July 10, 2008