nicknames you have; why do you have them

Not really a nickname guy. Rich and Richie are short for Richard, but I wouldn't consider those real nicknames. Over the years I have had a few, but none of them have lasted. I was called "Dirk" by some of the guys I played basketball with in high school because I was the only basketball player with shaggy hair and I guess that made me comparable to Dirk Nowitski. And "the Lionheart" was a nickname for a few days a couple summers ago, which was picked up around the card table, but probably only because it was late and everybody was tired. Not sure if it's fortunate or unfortunate, but that's all I can think of, and I'm fine with it.