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1.
Dubstep music relating to My Little Pony: Friendship is Magic. Often created by bronies, dubtrot can include dubstep remixes of songs from the show and original pieces created as homage or in reference to the show.
DJ-Pon3 released a new dubtrot single.
by Kabaka August 08, 2011
 
2.
Dubstep, but refereing to My Little Pony; Friendship is Magic, or anything that gallops or trots with hooves.
Guy 1: I don't like my little pony, but the musicians of the fandom are pretty good. Do you know any good pony dubstep?
Guy 2: Don't you mean, "Dubtrot"?
Guy 1: ...
by ClosetBrony October 03, 2013