When I was in Art school, there was a "Game Art" club on friday nights dubbed "Black Ops" which was really just an excuse to use one of the classrooms for setting LAN games for FPS's. Well, we advertised the club to get new members and we set up a rule where we picked a name for you until you won a match in which case you could choose a new name for yourself. This guy gets "Cockbyte" and we're playing MOHAA. Well, he's doing so bad he starts to complain about the rule(after talking a bunch of shit before the rounds) and actually tries to put in cheat codes in the console, but lets us all know in the game chat because he put it in wrong. lol
So basically, he gets mad, changes his name to "My bullets don't work" and eventually has a nerd rage meltdown that almost gets him thrown out. So the name just stuck. We also made a point of reminding him that his bullets didn't work.