tell me about it
US /tel mi əˈbaʊt ɪt/
UK /tel mi əˈbaʊt ɪt/

1.
raccontamelo, non dirlo a me
used to express sympathy or agreement with what someone has just said, especially when they have been complaining about something
:
•
“The traffic was terrible this morning.” “Tell me about it! I was stuck for an hour.”
“Il traffico era terribile stamattina.” “Raccontamelo! Sono rimasto bloccato per un'ora.”
•
“I'm so tired of all this paperwork.” “Tell me about it, I've been doing it all week.”
“Sono così stanco di tutta questa burocrazia.” “Raccontamelo, l'ho fatto per tutta la settimana.”