Thanks, Andy. My family (both sides) comes from Lithuania, Latvia, Russia, Germany, and France (maybe). They all spoke Yiddish, but I don't think they all understood each other all the time.
When my parents didn't want me to know what they were talking about and didn't feel like waiting until I wasn't around, they would speak Yiddish to each other. They didn't always understand each other. I used to complain, "Talk American!" This didn't work, so I got my grandmother to teach me Yiddish. I was never fluent, but I understood a lot more.
It was times like these that my mother would tell me that I was too smart for my own good. When I learned other languages (for fun), she would say, "Gezunter in kupf." When my friend and I spoke Spanish to each other so our parents didn't know what we were saying, I was too smart for my own good again.
I'm rambling. Sorry. I just received a harrowing letter which led me to make a harrowing phone call. I'm semi-unharrowed at the moment.