Also known as "Stop That Shit Now" is what you tell your friends who is being annoying or stupid. Sometimes used by parents un-abbreviated at their kids who are being obnoxious or plain stupid.
Friend: Yo STSN you are spamming me memes nonstop
Parent: Jose if you don't stop that shit now im gonna get the belt out.
Parent: Jose if you don't stop that shit now im gonna get the belt out.
by ayyay14707530 September 02, 2020
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