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!!
by I'mwhatsup(: February 12, 2010
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Possibly derived from "what's the update." Extremely overused, almost exclusively by America's youth.
Sometimes I wonder why people always ask each other the same question over and over again, when answer is always "nothing." Are we really that dull?
Mike: What's up?
Matthew: Nothing. If you ask me again I'll roast you.
by Renaissance Woman 4 u January 9, 2005
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A way of agreeing to what the other is saying. Or if they ask you a question it can also mean that you are down to do what they're asking.
1:"Ay mayne, i got this killa, we blazinituptoday?"
2:"Shiiiit, that's what's up!"
by MonalisaelisaDelafusa April 9, 2009
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There are many definitions for this.

1. The opposite of down.
2. The sky
3. The clouds
4. The sun

5. Space

If you want to be boring, you can just say:

1. Good
2. Bad
3. Okay
Me: Hi

Mom: What's up?

Me: The opposite of down.
by OofBanana March 19, 2019
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Something that is exciting, great, and agreeable.


cool the shit the bomb These are just a few synonyms.
by dd3953 December 31, 2009
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How people who are too lazy to add a single apostrophe to a word, spell the phrase, "What's up?" (What-is-up?).
Man: Hey man! Whats up! I'm so lazy that I decided to leave the apostrophe out of "what's", that way I can conserve more energy. You know, because I oppose global warming and all that.
by Hold My Umbrella June 14, 2011
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What's up, or how's it going, often a phrase used by cool people
Joe: What's up with it?
Bob: Oh, nothing really, just hanging out at
by Court2010 August 7, 2008
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