A person approached me today at the grocery store and and said "Greg, how's it going?" I politely said "I'm not Greg." He thought for a second and chuckled then said "My bad." Now, what is odd is when I was in Virginia I had a coworker by that name and people would confuse us for each other. I don't know how because he had lots of hair and I shaved my head.
So, I'm in Pittsburgh now and the same thing happens. My name isn't Greg. I guess my mother chose the wrong name for me.