1 definition by I'mwhatsup(:
Used to agree with something, To say you like something, When you don't know what else to say, and when you don't know how to answer a text.
-I'll be there later.
-That's whats up.
-So, I'm bored.
-That's whats up.
-Wanna get burritos?
-That's whats up!!
-That's whats up.
-So, I'm bored.
-That's whats up.
-Wanna get burritos?
-That's whats up!!
by I'mwhatsup(: February 12, 2010