Here is some particularly low-hanging fruit, but I had to start somewhere:
Another easy one:
And here is a dubstep mix of "Beat It" which very much does so:
Now for some classical. Here is a Grand Galop Chromatique that should never have seen the light of day. Composed by Franz Liszt:
For some of the best music that exhibits vulgar gaiety we turn to Offenbach:
Baroque composers couldn't reach the depths of badness that Romantic ones could. About the worst they could manage was a kind of mind-numbing boredom where every dull idea was immediately repeated. Here is a lute concerto by J. F. Fasch:
And that's at least the beginnings of a Bad Music Playlist! Enjoy.