Lol........... You better not say that !! Especially "주둥아리 놀리지마" If you have never been in a fight.... lol

ta gueule 닥쳐, 입닥쳐, 조용히해

they ado not use it becuase they are so polite hahahah

Also 입 다물어. An indirect and polite way : 시끄러워(요)

the most common and short expression ; 즐 jeul LOL