An excuse for your friends to be dickwad punsters when you just want to hang out.
A-Hey what's up?
B-The sky!! hehehehe
A-Fuck you, Thomas
by j00j00 May 28, 2015
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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
by The Billionth Random Monkey December 15, 2014
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often used when your wanting to fight someone
hey man i heard you wanted to bump,whats up then!!!
by mike the birdman January 29, 2006
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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?
by GangstaRL December 19, 2005
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it is the same as whats up
what up dude
by tommy November 25, 2002
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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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