A shortened form of the phrase "Shut Up."
Joe: "Yo bro, there's like a guy that tried to eat a cheesecake but it fell down the tab-."
Kevin: "Shup."
A word for a hot chick when you want to signal your buddies to check her out.
Yo that chick was shup or you say SHUP and your boys know to scan the area for a hot chick.
Pronounced: "Shuh-up"
I.E. cease from talking, be quiet but in a fast yet slurred manner. Can also be used when you have no comeback.
A very sluggish pronunciation of the word, "Shutup."
Most professional skiers, surf boarders, and skate boarders use such slang.
Sexy Girl: Hey Markus, I heard from a friend that you have a flatulence problem.
Markus Léaf: Shup!
A combination of the words: shut and up.
For people of exceptional laziness.
C: You're such an ass
S: Shup you