Nick name thread and why

In the restaurant business I was known as "Mr. G-off", in the biker circles I was known as "F" or "Candyman", most of the time now I get called "Broman"! Since my full name is Geoffrey, I used to get called Goofrey, Godfrey, Gary, and people who don't even know I have a brother named Greg will often call me Gregory! Nobody that sees the full spelling of my real name ever calls me Jeff!!