a human who can create dub step using only theirself, its kind of like a beatboxer but they're doing it dubstep style
Friend 1: Did you hear about that guy who won Britains Got Talent?
Friend 2: No, what about him?
Friend 1: He's also a dub stepper!
Friend 2: No way! Thats awesome, what's his name again?
Friend 1: Jai McDowall I think