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.

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

MB

short for Mercedes Benz.

He drives a hot MB SL500!

by DTNS January 25, 2009

MB

MANipulative Bitch

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

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

by tory borty May 8, 2013

MB

A short term for Money Boy which is basically similar to Working Girl but it’s a boy

He is a quite famous MB

by The_holy_avocado:)) March 5, 2019

MB

My Brudda or My Bredrin

Haps baps MB and ML= Happy Birthday my brudda/my bredrin , more life!

by MrStealUrDefinitions;) December 18, 2019

MB

stands for Major Bitch

olivia: omg you're such a slut cassidy
cassidy: ugh you're such an mb

by socksandsandals25 May 13, 2016