Well I guess this was when I was during my first 'psychosis' and thinking the mafia was after me. When I was in the psych ward, I made sure I steered clear of nurses, doctors, etc who's last name sounded remotely Italian ... (Dimaggio, Balistriani, Valente,...) as I assumed they were Italian, ie part of the Mafia and therefore trying to 'do me in.'

The Social Worker comes in the next day. Middle aged woman, dark hair, heavy set. I could detect a faint resemblance of a little moustache on her upper lip. She asks a couple questions and I notably pick up on her accent. The conversation went like this:

Me: 'Where are you from?"
Social Worker: 'Brooklyn, why?"
Me: What's your last name?"
Social Worker: "We keep all our last names confidential."
Me: "Does it end in a vowel???"
Irritated Social Worker: "How are you feeling today?"
Me, Psychotic Psych Ward Patient: "Are you by any chance Italian??"
Social Worker: "I don't discuss religion."
Me: "Christianity is a RELIGION! Italian is your HERITAGE!"

Needless to say, I didn't see HER again...