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My Brothers Keeper, a surf gang originating in Australia but is used by any local surfers who want to distinguish themselves.
MBK by The_Stallion April 23, 2009
A bunch of d*c*riders that know MB humans will give it to them 🐝
thats that mbk nigga , we bouta boom that nigga wrda ma dead”
MBK by Bigmakk🐝 November 14, 2022
MBK stands for a professional League of Legends player, known for his attributes of being a chadwick thundercock and a member of the men of the choctaw nation. MBK can also be used as a term of endearment, similarly to chad and extra handsome. However, some MBK's can be Fuckboys and should be approached with caution
"Bro, have you seen kyle? he's literally MBK now. He's finally hit Silver IV in league and is getting out of the friendzone"
MBK by Muffinmanseudonym August 22, 2019
mbk
mbk by bug-z September 8, 2003
the leetest cs player that ever did live
mbk by fil December 23, 2003
Acronym for the baudy game, often played in offices, "Marry Boff Kill", with "boff" being a less offensive term to use in the office environment, or when being referenced on television, than than fuck.

In this game, the names of three people are proposed, which can be colleagues, movie stars, bosses, politicians, etc. The participants then announce, if hypothetically forced to choose a role for each person, which one they would marry, which they would "boff", and which one they would kill.

The game was featured in an episode of 30 Rock.
Q: "MBK - Sheila, Brenda, Rita"
A: "Marry Brenda, boff Sheila, and kill Rita."
MBK by Damascus Dan September 22, 2020