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

MB

Make-believe.

Fights in real life don't work like they do in movies, it's all MB.

by bitstripslang October 11, 2019

mb

Mage Bank in RuneScape. People say they're mb pk'ing when they are player killing in the wilderness at the mage bank.

OMG! I just owned a noob for whip at mb!

by Gre8est_Sk8r December 10, 2008

MB

an underage love interest, usually one that's lonely, anti-social, and desprate.

Dood, you call that MB up today?

Nah man, she's total jail bait.

Yeah, but you know she gives it up!!

by dood11 December 26, 2007

mb

my boi or my boy

boyfriend : i love you my girl
girlfriend : i love you too mb

by Wierdo💖 May 9, 2019

mb

An expression when you'are a shitty player in the KVLT game : Starcraft.

MB = my bad

Player : What kind of jerk are u? What are u doing ?
Noob : mb

by Pornocio September 28, 2006

MB

MB can mean Megabyte or Maybe, depending on how much leet the person you are talking to speaks. Hell, they might not even know what a megabyte is.

1. I will hack your 534533 mb!
2. I will hack your 534533 mb, mb!

by WereDogfish December 13, 2004