I was pretty embarrassed the other day...my cousin and our respective wives got drunk and walked down the street to get some Chinese. My wife dropped her chop stick, and I said, "You have no honor!" and realized the waitress was right behind me. For a second I was horrified because I was making a cultural joke within her earshot, but in an instant I realized it wasn't blatantly obvious so I was probably OK. My cousin's wife followed me up by exclaiming, "You dishonor your famiry!"
I tried to shoosh her but it was too late. It was super embarrassing, but our belligerent asses were laughing so hard. I couldn't help it.