On two different occasions I've had people come up to me and call me by a different name - and not realize their mistake until I actually talked to them. Once when I was about 15 and the other time when I was in my twenties. That's what you get for being average looking.

Then there was the kid in Toys R Us that grabbed my hand. She thought I was her mommy because I had the same coat as her mother. Poor thing was so scared until her real mommy found her.