what's up

A question that means "hi" or "What are you doing"
It can get annoying, but people don't seem to understand that.
The best way to answer is "I think it's the opposite of down" if you are annoyed by this question

"What's up?"

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What's Up?

1. A casual greeting or conversation starter, somewhat of a rhetorical question.
Usually followed by something like "Not much, you?," "Nothing much," or even answered with a "Hey man, how's it going?"
syn: How's it going? What is new?

2. syn. What can i do for you?, What would you like? What's on your mind?

1. Person #1: Hey There! What's up?
Person #2: Oh not much. What's up with you?

2. Person #1: Hey come here for a second, I have to ask you something.
Person #2: Ok, what's up?

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That's What's Up

To show approval of a person's achievement.

"You got accepted to Harvard? That's what's up, dude."

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what up

it is the same as whats up

what up dude

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what's up

see also: whazzup, whassup, whasabi!!, etc.
1. Hi
2. Wtf is wrong with you??

It's probably originated from the late 20th century, when people were astounded with the sky. The only thing that they would reply was "nothing"

Probably the first term to the decline of western civilization

1. Person 1: What's up?
Person 2: "Nothing" (most common response, maybe 99% of people say that)

2. Person 1: What's up?
Person: "The sky" (smart alleck answer: also: "the ceiling" or, "da roof")

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whats up

what's happening with you?

also lookup:
word up
sup
wizzup

hey, whats up?

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whats up with that

One of the funniest series of sketches Saturday Night Live have ever made.
Seriously search "Whats up with that snl" on Youtube

Kenan Thompson "Ooooh yeah, Whats up up with that, whats up with that"

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