MSB 

The term "MSB" means MumSBrain, similar to mumslife it's used to signify that you aren't lying about something.

'Yo bro have you seen that girl with the fat ass'
'MSB i saw it, it was hugee'
'MSB it was huge and juicy'

MSB by blackthugshaker123 September 3, 2025

Moonlit Silent Basketball (MSB) 

The first sport for stoners. You have to be high to enjoy this game. You and your buddies try to play basketball while making as little noise as possible, and the moon must be visible above your heads.

I'm blazed right now dude, lets go play some Moonlit Silent Basketball (MSB)!

Moonlit Silent Basketball (MSB) by Guitarpwnage93 February 10, 2009

E/S Mad Swan Bloods (MSB)

Also known as Byrd Gang (VSOP), one of the most active Blood sets on the East Side. Main cliques: 77th, 79th, 80th, and 84th. Allied with IFGB & CPFGB. Longstanding beefs with ECC, 73GC (an eastside gang), and 73HC (also an eastside gang) — some of the deadliest in L.A. history.

“Aye blood, them E/S Mad Swan Bloods (MSB) don’t play on bloods! — if it’s up, it’s stuck.”—LA locals

E/S Mad Swan Bloods (MSB) by RealTalkOnlyFool October 12, 2025

MsBreezy 

The best YouTuber of 2018. Formerly known as kuledud3, and definitely is a force to be reckoned with. With the power of her jokes she can kill her enemies in the blink of an eye. Her following includes people from all over the globe including Ireland and the UK. Without her, YouTube wouldn't be the same. With an incredibly supporting and sympathetic fanbase, she can accomplish any goal. Even YouTube is jealous of her power, demonetizing videos left and right, attempting to crush her career but alas, to no avail, the demonetization strikes are not keeping her down. If anything, they are making her stronger. Her goal to try and take over YouTube is going swimmingly.

Seth: Who's your favorite Youtuber?
Me: MsBreezy all the way!

MsBreezy by jayhrod26 March 15, 2018

msbysbf 

the most out of pocket individual on the clock app. ky pls think about your mutuals. </3

person 1: what the hell is this.
person 2: oh lol that's just one of msbysbf's posts.

msbysbf by ilovesero101 May 27, 2021

msbysbf 

msbysbf is a omega and they are not cute. they are ugly.

msbysbf? oh that om@ga person?? yeah i hate em.

msbysbf by IDFKLEAVEMEALINE May 27, 2021

msblast

One of the innumerable Windows virus created by Linux users who are too scared or stupid to go directly after Bill Gates himself.

Linux fag: 1 hate b1ll gates c0z he suxx0rz d0g felch. 1 kn0w im g0na d0 1 w1l make a v1rus that k1ls the hd of evry W1nd0z usr. l0l0l0l.

msblast by former penguin September 1, 2003