that's what's up

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that's what's up

1. (slang) Used other than figuratively or idiomatically: see that's,‎ what's up.
2. (slang) Used to express acquiescence or concurrence; true; indeed.
   • 2009, Hip Hop Underground: The Integrity and Ethics of Racial Identification, by Anthony Kwame Harrison, page 112

     I choose this particular terminology because of the frequency with which I heard it used either in describing a person (“she knows what's up”) or as a statement of approval in response to a particular thought or idea that was introduced (“that's what's up”)

   • 2013, Tyler Gore, G.A.B.O.S.: Game Ain't Based on Sympathy, page 106:

     “Dog, I told you the nigga Turtle said he'll be here 'round 6:30. It's only six o'clock, so if the nigga don't show in thirty minutes, we'll just bounce and do the shit ourselves,” Flick said.
     “All right, that's what's up,” Pokey said, taking a seat on the bleachers, watching the basketball game.

• hell yeah
• I know that's right
• that's wassup
• true that
• word (slang)
• yup