pull the other one (it's got bells on)
US /pʊl ðə ˈʌðər wʌn ɪts ɡɑt bɛlz ɑn/
UK /pʊl ðə ˈʌðər wʌn ɪts ɡɑt bɛlz ɑn/

1.
거짓말 마, 말도 안 돼
used to express disbelief at what someone has just said, implying it is a lie or an exaggeration
:
•
You won the lottery? Oh, pull the other one!
복권에 당첨됐다고? 에이, 거짓말 마!
•
He said he saw a ghost, but I just told him to pull the other one.
그는 유령을 봤다고 했지만, 나는 그냥 거짓말 마라고 했다.