A term used when you are upset and wants everyone to shut da hell up cuz they gettin on ya got damn nerves. or a term used when you want to cut someone off while they are saying something retarded.
"hyuck guess what i did at anime club yester.. "Shut that ass" you is a retarded hoe.

The whole room yelling." Shut that ass!!!!!!"
by hihomie456 March 3, 2010
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To express astonished disbelief at what is being said (especially gossip).
Penny: Try thinking about this... Sheldon and Amy had sex!
Raj: Shut your ass!
by Spaz111 April 15, 2011
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another form of "shut up", similar to "shut your mouth" or "shut your face."
- I won the lotto yesterday.
- Bullshit, shut your ass.
by KRHimself June 11, 2005
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Another way in telling somebody to shut their mouth.
Nahojay-Hey, Sagnnua, u a dyke.
Sagnnua-Hey Nahojay, shut yo ass up!
by anskakdn September 22, 2008
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be quiut, shut up ,
get your ass to sleep and shut your ass up
by sherk123 November 1, 2018
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SYA (Shut Your Ass): When someone talks so much bullshit or nonsense he is asked to stop talking or shut his ass so the nonsense or lies will stop or the shit stops leaking from his verbal asshole.

Alternate meaning: When someone tells you something so amazing or unbelievable or too good to be true that you are in awe and dismay that you tell them to shut their ass because you think its utter bullshit.
Dominic: I'm telling you i seen her with my own eyes, the chick in the car next to me was Kim Bassinger and she was checking me out!

Angel Baby: Shut Your Ass (SYA) Dom, you're such full of shit you wish that was her in that car checking you out, Keep drinking and Shimmy Sham will start dancing nude in this mofo!
by Zio Carmine/Don Gesu October 4, 2011
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