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

1.
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.”
•
“The rent prices in this city are insane.” “You’re telling me! I can barely afford my tiny apartment.”