It took longer to arrive than I expected, but when it did, there was an inexplicable sausage link on a separate side plate. Sausage? I hadn't ordered sausage! Mystery sausage! I took a bite. What else does one do with mystery sausage?
A moment later, the waiter came back, and explained in poor English, "I think this isn't yours." (points to Mystery Sausage). I said, "I didn't know what it was, so I took a bite."
He started to take it. What was he going to do, give it to someone with a bite missing? He realized how silly that was, and just shrugged. With an embarassed smile he put it back on the table, and waved his hands, like waving off a plane on a bad landing approach. "Don't worry." He walked off.
Moral of the story: If something mysterious turns up on your plate, put it in your mouth as fast as you can!