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1.
The verb used to describe a group of people chilling to some filthy dubstep.
Eduardo: "Hey dude have you heard Jose's new sound system?"

Xavier: "Yeah man! It's awesome we were dubsteppin' to Zed's Dead earlier! I felt so filthy."
by Ctj232 December 10, 2010
 
2.
The act of excessive cocaine cutting by white boys.
Man, I went to get a sack, but they be dubsteppin on everything they're sellin.
by DopeBoy007 January 25, 2012