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

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

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

MB

1. The Midget Bitch.
2. The Fairy that glues your balls and dick together and then glues your balls to your skin so when you jump up and down there is no sound effect.

MB is a little bitch

by JRFan August 1, 2007

MB

message board, aka forums.

mb <-- fu.chewedkandi.net is an "mb"

by Jenn August 17, 2004

MB

MB stands for someone who likes to eat alot.
the term comes from "munch bunch" - a yoghurt food product.

they usually have a weird big sized head too.

"MB's eating once again"

by KawaiiKid June 24, 2009

MB

MB is an acronym for Magic Burst. Specific to FFXI, a Magic Burst occurs when a mage fires off a spell in co-ordination with a combo executed by bashers and damage dealers. In order to be sucessful and Magic burst must employ a spell of a type matching the combo being performed by the other members of the party. It is possible to have more than one mage complete a magic burst per combo.

We're pulling a Liquifaction combo so cast a fire spell for MB.

by Moonbug October 29, 2004