I think I'd have to choose between mainstream pop music and death/trash/black metal.
It's not just everything pop music stands for - Rude Boy from Rihanna comes to mind, listen to the lyrics, they want to ruin all females of our society - but also the lame, uninspired instrumental stuff. Most of the time it's just a couple of 2 second beats looping for 3 to 4 minutes, with some fake tramp smearing her digitally altered voice all over it.
(Also, I helped out at a tv-station for a while - not exactly MTV, but they also played a lot of music. I got to learn a little bit about how and why it always is the crappy pop music that gets airing - quite interesting I must say, though nothing that I wasn't suspecting.)
And of course the stupid side of metal. I mean, I like me some metal: Heavy, Classic, Groove, Doom and Stoner Rock (Oh God, do I ever love me some Stoner Rock - Monster Magnet for the win). I even like a lot of fusion genres: Alternative, Folk, Industrial, Nu,... What I don't like is Speed and Power, because they eventually turned into Trash.
An example of auditory molestation:
Also, it would seem this is not 'trash metal' but 'industrial grind', which only goes to show that you can pretty much call everything just about anything you want when it comes to music. Crazy kids and dem dubious music genres these days...