Have you ever known anyone with two personalities?
I'm not talking about people who get really moody and behave a bit antagonistically when they're stressed.
I'm talking about a person with a profound difference in how they think and behave at times, with everything from their posture, accent, body language, and their opinions and attitudes, to even calling themselves by a different name and saying they come from a different area.
I'm not talking about people who put on an act (e.g. a 'front' or a 'facade'), nor people who feign.
I had a friend a few years ago that invited me over to his house one time... and when I got there I at first thought that it was just the weekend and he was unwinding and letting his hair down a bit. As the hours went by I began to see more and more that it was almost like he was a different person. He was calling himself by his real name too, which was a little strange because I only ever heard him called by a nickname.
Have you ever encountered a person like this?