I hope the title speaks for itself. My examples:
1973 or 74, the Navy sent me to Millington, TN for training. Special Services offered a trip to Nashville one day - tickets to Opryland and the Grand Ol’ Opry, plus bus there and back. I’m not much into country music, but it beat hanging around the barracks, so off I went.
Just after I entered Opryland, I thought I saw my 10th grade English teacher. Mr. P. was a large man with a distinctive haircut and an equally distinctive way of pushing his hair out of his eyes. I was really shy back then, but I screwed up my courage and approached the man, but as I was saying “Are you Mr. P?” I knew immediately that he wasn’t.
The man very politely said no, and I immediately turned, entered the nearby ladies room, and hid there till I was sure he was gone. There was no reason for me to be embarrassed, but there ya go. Had I been less of a wuss, I might have explained why I approached him. Instead, I’m sure the poor guy was somewhat perplexed at the girl who asked him a question, then ran for the bathroom.
A couple years later, I was stationed in San Diego, and for some reason, I was downtown, alone, waiting for a bus to return to the base. As I sat there, a car drove by, honked, and the guys inside waved. I automatically waved back, for fear they were someone I knew that I didn’t recognize immediately. A minute later, the same car drove past more slowly, and I pretended not to notice, because I realized they were looking for a “date.” Maybe I was in an iffy neighborhood and didn’t know it. Luckily, there were lots of people around and my bus arrived shortly thereafter.
From the other side, I’ve never been mistaken for someone else, but stories of that kind would fit this thread also. Do share!