Top Definition
The act of insulting someone's music taste by comparing the music they are playing to remarkably terrible music/bands over and over in an obviously taunting manner. This is usually done by the passenger of a car whose owner is playing music.
"Is this Good Charlotte? This bass line sounds just like the one from that Hawthorne Heights song. "OMG! I love the Click Five's new single!"
"Dude, I was cool enough to drive him home yesterday and he totally started DJ Dissing my new emo-punk mix"
by TheWrangler May 26, 2009

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