Non me ne parlare! (we actually use the opposite to the English expression... don't tell me about it!) A chi lo dici! ( Whom are you telling? as in... no need to tell me as I have had the same experience)

Dimmi./Raccontami. or: Parlamene. (It depends.) And I would like to add that you should say: "Come si dice" instead of "Come se dice".

:) I meant it in a funny way.

hi, can you provide a little more context please? Did you mean 'tell me about it' in a funny way? As in... ' he can be a real pain...' ' oh yes... tell me about it'

dimmi di lui.