This term is used within a small, feminine, girl power oriented hip-hop community as a substitute for "what's up?" The term is solely used amongst openly feminine hip-hop musicians.
What up Baii? Haven't seen you in a bit.
by Tony Titt July 1, 2010
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fight them
i'm gonna show em whats up
by @astro_cat November 20, 2017
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a way to address a room full of people, in a public and/or private place, perhaps after one of those " i just don't give a shit" days.
scene: walking into the break room after you've realized the last 4 hours you've been working have produced nothing but shit.

enter room:
person 1: hey bill whats going on
person 2: bill, BILL, billy boy!
person 3: hey billy

bill: (mumbles) yeah um hum... WHAT'S UP YOU MOTHER FUCKS! hows your day asshole? Mine's turned to shit how about that? :promply walk to the vending machine grab your snack in the midst of the silence and go outside to smoke:
by jadiepoetatie January 29, 2007
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This phrase is a greeting of endearment between Latino gangster youth culture. Ese (masculine) and esa (feminine) are comparable to homeboy or homegirl. The phrase if said by a non-Hispanic is extremely offensive. It is comparable to the phrase, "What up, My n*gger?" in the Latino community. Also, the use of homes is derogatory because it is urban Latino gangster ideology.
by Rafa Diego October 15, 2008
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Something you say to a dog to calm them down; you may have to replace "MJ" with the dog's actualy name.
Originated from when I was playing with my sis's boyfriend's dog (which is shortened to the initials MJ). Then I said that cause I was bored and she was trying to jump on me.

Me: Mary, stay down!
*dog is jumping at me*
Me: Yo MJ what up dog?
*she stops jumping at me*
by kalley treay June 9, 2007
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1. an expression of approval and thanks for a good deed, OR, 2. can be used in sarcasm to show disinterest in someone's actions or feelings
1. Miss Utility: "I'm not wearing any panties."
Tito: "That's whats up good lookin out!"
or
Danny: "I got laid off today. I need to look for a new job."
Tito: "That's whats up good lookin out?
by goose smacker October 25, 2008
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A greeting to a friend who is leaving a party or social gathering when it's the first time you've seen them all night, even though you've both been at the same party the whole time.
Derek (appearing suddenly from other room): "It's getting late dudes, I gotta jet. Catch you later."

Jon: "Hey Derek! I didn't know you were here. Alright guy, what's-up-see-you-later."
by jonnywords June 14, 2011
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