Often jokingly reffered to as a Dubstep-o-sexual. A young sexually frustrated man who is actually aroused by the sound of a Dubstep bass-wobble. They will typically use songs by Skrillex or Borgore as a substitute for porn.
A tell-tale sign of a dubstep wanker is when a song they particularly like comes on the radio and they let out a high-pitched sound of exitement, not unlike a the cliche-fake-female orgasm
Person 1: *hears "Ruffneck" come on the radio* "OH MY GOD... mm I fucking love this track!"
Person 2: *under his breath* "total dubstep wanker..."