When I first played the original Twisted Metal I fell in love with the crazy, serial killing, flaming ice cream cone throwing clown. It made me like clowns in general; the idea that most all of us wear a mask every day that hides what is really inside ourselves. Been hoping to save up enough money to have Paul Booth design a full back tattoo of the most sadistic looking clown his mind can muster.
Anyway, WWF Warzone came out in 1998 and featured the first Create-a-Character. I started throwing different stuff on the guy and he came out a really evil looking clown, naturally I picked the name Sweettooth (as one word opposite of the game's Sweet Tooth). The name stuck and I stole it. I've used it as an alias ever since for just about any forum or video game I play. If I had the money I'd copyright the name lol