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MIS Bureau of Investigation is a team of highly trained agents, who while maintaining the cover of school students have doxed various targets and successfully completed all their missions. The team is thought to consist of 12 members, but there have been rumours of an inner much darker and scarier circle. You do not, and I repeat, DO NOT mess with the MBI, they can destroy your digital reputation. If you hear the name, you shall tremble with terror.

The MBI has allegedly been shut down, but some say that legends never die.
Nada: What the fuck, the MBI is a fucking joke!
Godly voice: When they are done with you, all that will remain of you is nada.
Nada: *trembles to death*
via giphy
by Godly Voice September 19, 2019
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Milwaukee's Best Ice, 5.9% alcohol by volume. an economy beer made by miller. cheap beer that gets you very shitfaced. 24oz cans usually go for somewhere near a dollar, but dont go too crazy cuz these badboys pack a sloppy drunk and a mean hangover
"man i just put down my 7th MBI kingcan"
(which is a subtitle, cuz after 7 nothing remotely useful is coming out of your mouth at all)
by cshabby February 21, 2009
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Acronym for a German-language song called "Mein Besseres Ich" ("My Better Me") by the artist Protagonist. Commonly used as a hashtag in social web (e.g. on twitter) for posts and comments referring to all kinds of human behavior of acting particualarly individualistic or "more special" than others. The song the hashtag is referring to satirically addresses the very same behavior in its lyrics.
"I hate people extensively posting pictures of themselves on Instagram #MBI"

"Immer diese arroganten Selbstdarsteller #MBI"

"Hipsterism is over #MBI"
by jmg_88 January 25, 2014
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