I was talking to this pretty Italian girl who spoke very good English. Suddenly it occurred to me that we could be speaking to each other in Italian, and I suggested as much, in Italian. She wasn't exactly thrilled with the idea, and sort of shut me down.
She let me speak in Italian, but looked bored. She corrected me that instead of "fuori," I should have said "iari." The former is a real Italian word; I have no idea where "iari" came from.