you’re telling me
US /jʊr ˈtel.ɪŋ miː/
UK /jʊr ˈtel.ɪŋ miː/

1.
내 말이 그 말이야, 정말이야, 두말하면 잔소리
used to express strong agreement with what someone has just said, especially when you have experienced the same thing or feel the same way
:
•
“This traffic is terrible!” “You’re telling me! I’ve been stuck here for an hour.”
“이 교통 체증 정말 심하다!” “내 말이 그 말이야! 한 시간째 여기 갇혀 있어.”
•
“The rent prices in this city are insane.” “You’re telling me! I can barely afford my tiny apartment.”
“이 도시의 집값은 미쳤어.” “내 말이 그 말이야! 작은 아파트 월세도 겨우 내고 있어.”