staple your mouth shut
basically it means shut up but in a more disrespectful and violent way
him: i hate arguing with you sometimes
her: whatever, just syms at this point
Although commonly confused as ‘shut your mouth’ this short acronym actually means ‘suck your mum’
Jim: your not a cool person
Jimmy: sym
Jim: I don’t have one- she died this morning
Jimmy: oh sorry
Jim: it’s fine
Jimmy: oh ok, sym
suck your mum with a straw (founded by vekkie tekkie but abbreviated by nagib warrior and Ksmoremoney)
Bro i swear your ex cheated on you
sym w a s