MB

Main Bro.

You have lots of bromance or bros ((best/good friends))
Then you have your main boy.

Tyler: He's my boy
Vicky: What happen to Harish
Tyler: Howard's my mb

MB by ch3tta grett0 December 15, 2010

MB

mega bytes

MB doesnt mean anything else fuktards

MB by onge May 15, 2004

MB

Someone who posts lyrics all the time, often annoying others.

Person A: "Let's find the key we've lost, as all the people cry in vain"

Person B:"Don't be an MB."

MB by Auradyme December 10, 2016

MB

An acronym standing for Marching Band. Used by people online when messaging people publically,such as MySpace or Facebook, to avoid the criticism or questioning of other people.

James: Hey Mike are you doing MB next year?
Mike: I can't, I'm joining the football team.

MB by -=[DeTeRMiNaTioN]=- August 5, 2009

MB

short for Mercedes Benz.

He drives a hot MB SL500!

MB by DTNS January 25, 2009

MB

MANipulative Bitch

Don't listen to her. She's pulling an MB on you.

MB by HateBucket30 April 29, 2010

MB

morning bulge; when you wake up and notice that your dick is poking your pants, thus forming a bulge

I don't get embarssed when my mom notices my MB coz its only natural and happens to all teenage boys

MB by tory borty May 8, 2013