I still get this one in my travels. I'm a born and raised Cincinnatian. When we can't hear or we misunderstand something, we say "please?" Cincinnati has a rich German heritage. Germans say "Bitte?" Its short for please repeat.
I was leaning up against a wall at Mardi Gras smoking a cigarette. A young lady asked me for a cigarette, but I didn't hear her, so I said "Please?" She said "O.K. Please?" When I explained that I didn't hear her, she said "Oh, you're from Cincinnati and I asked for a cigarette."
I find it interesting that we live in the same country but we don't speak the same language.