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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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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When you're being a fat annoying whore and someone points it out, usually used by nigga accent and sometimes by a white cunt who tries to act black.
Kid: "But Dad I want that"
Dad: "Sorry honey, I don't have my wallet with me"
Kid: "But Daddy... I REALLY WANT THAT" (Keeps repeating and crying)
Dad: "HOW ABOUT YOU SHUT YOUR BITCH ASS UP BEFORE I SHOVE MY COCK UP YOUR ASS"

Nigga: "Why y'all put cheese on my cheeseburger?"
McDonalds Employee: "Sorry sir wh-"
Nigga: "Shut your bitch ass up"
by PseudonymNiggaPenis August 7, 2019
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use for that annoying nigga that is always bothering you ! don't use violence use SYBAU ! but don't use this in a bad situation like when your in trouble and your mom's yelling at you and you whisper under your breath "shut you bitch ass up..." there is a 101% chance you will get slapped . (Warning) Keep Out of hands of children !
Olivia: Ohhh im olivia and i have a weird head and cool bf...
Eugene: Shut Your bitch ass up (SYBAU) !
Olivia: tww non-sense !
by KiDWest May 26, 2010
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