I once made a habit of eating at the same fast food restaurant once a week. The cleaner working that same shift was a very friendly and pretty unique-looking girl. I think she had like half an arm or something like that, walked with a limp, and was pale with red hair which is not that common here.

One day she walked up to me, and basically went "hey, are you [name]?" and used my actual first name. So I replied yes and for a moment I was desperately trying to remember if I did know this girl or not. Like I said, she had a pretty unique appearance but I can be extremely unobservant at times so I suppose it was possible I just never noticed that I knew someone who was missing a part of their arm? I have missed similar details before. I have definitely known some people with naturally red hair.

But no, we didn't know each other. She just happened to go to school with someone who looked like me and had the same name as me but I had never even heard of that school so it couldn't have been me.