Sup is something cool people say. It can be used as a greeting. People say "sup" when they don't feel like saying whats up because it's to long. Also, people say "sup" because they get in the habit of saying "sup" so they just always say it. It can be used by girl or boy.
"Sup girl"
"Nothing much"
"Cool"
"Sup with you"
"Nothing"
by Cleo Defobio September 28, 2015
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A term that cool people use because they are too damn lazy to say What's up. (Too much effort involved there man.)
by RockStarSurferChick March 21, 2003
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Short for 'What's Up?'. 'What's Up?' is short for 'What is Up?', and 'What is Up?' is short for 'How are boring daily events in your life going?'.
Guy 1: 'Sup, man?
Guy 2: Pretty cool, man, you?
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How everyone starts an IM convo after saying hey. It is then always followed by "nm"
sn1:hey

sn2:hey

sn1: sup?

sn2: nm u?

sn1: nm
by Jimmy Joe December 25, 2003
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An easier way to say "what's up?"
Before, it was considered "wassup"
Now, it's just simply, "sup"
Some people consider the term just a way to say "hello"
However, most people think of it was a question.
If somebody asks "sup", you must reply "nm, you?"
You would reply "same"
Person 1: Sup.
Person 2: My mother was beaten up by gang members and was sent to the hospital. You?
Person 1: Same.
by fuckyoufuckyoufuckyoufuckyou January 1, 2011
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