KelsBels's definitions
Meaning that you fully understand and/or agree and find yourself excited about the idea or suggestion proposed.
Friend 1: "Yeah so I'm thinking we chill before, and then hit the club by 9. Got mad beer at the crib anyway"
Friend 2: "That's what's up"
Friend 2: "That's what's up"
by KelsBels April 5, 2008
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