My user is pretrolheads. Guess it almost speaks for itself but in a nutshell, owning a R5GTT and a subaru and working on the cars myself + cars as a interest and hobby is mainly why. Sometimes whish I had a different user but can't be bothered changin it!
Mine's a bit.....complex.
When my older brother was much younger he used to draw stickmen, who he named klstix (cool stix) and he uses that as his surname or alias. Then there's me, a kid who had no idea what kind of alias I could make, I didn't have any hobbies or important things in my life I could really relate to a random alias. Then my brother came up with an idea. When I finally decided to get an xbox live name back in 2008, I was caught in the same situation, I had no idea what I could use, then my brother said "Well hey, you're my brother, so why not make it something like klstixBRO?" and thus my alias that I use for everything in existence was born.