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Diminutive of "my bad", the enunciation of which saves neither the enunciator nor the listener any time of mind or eardrum, though which does indeed spare the enunciator the torment of touching the tip of his tongue to the front upper roof of the mouth as when one does actually say "bad".
Yo 'sup?! I lament the laze and malaise of the muthafucka who can't bring himself to say "my bad" but instead must employ "my b" in its stead, even though there is no contractive benefit gained by the effort, muthafuckas!
by Truth2Power September 06, 2004
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2
another way of saying my bad... also a habit of everyone at my school
person 1:dude you just spit in my face
person 2: o....my b
by juliedinosaur March 22, 2007
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3
Short for "my bad". Just sounds gangster.
Guy 1: Dude, you just stepped on my foot!

Guy2: Oh, my b.

Guy 1: You're so bad ass.
by Total Gangster February 23, 2011
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4
"AIM Slang":
1. Maybe
2. My b, My bad

Either one depending on context
1. John: Do you think Louis likes me?
Alex: idk, myb.

2. Alex: John! wtf, you smashed my new model car!
John: Oh snap! My b
Alex: Huh?
John: My bad.
by PT4BB June 05, 2007
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5
this mean my bad it’s when someone does something on accident and is saying sorry
oops myb i didn’t mean to call you addi
by thiccdaddy214 April 02, 2018
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7
Abbr. Move Your Butt.

Usage Note - Usually used in text messages but also seen during conversations.
Raj: "We are waiting for you from the past hour. Will you MYB and get here as soon as possible."
by H@rK3$ November 30, 2007
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