I got mine from an inside joke me and a buddy had. Whenever we would say something stupid we would say ok booster. It came from a term that a dad would call his son, it's like saying champ, big guy, or buddy... I think. I started using it when i was playing one of them computer trivia games at a bar, but i could only use six digits so I shortened it down to what it is now. I pretty much use this username with some added number variations for everything but the most personal stuff. Been using it for ten years now.