Dr Pepper
No one faked anything. That was a software glitch having to do with the member having a different name on the front page and in the forums. The f did not stand for “fake” but something else. There is another member currently an active poster with the same problem but with totally different names. I have no idea what causes that. In the case you are referring to, a totally different person happened to chose the same name (without the f). No one was deliberately impersonating anyone.