I've never found the moggy song in bad taste. I've even been known to sing it.
For bad taste, try 'You're So Ugly' by The New Modern Idiot Grunt Band, if you can find a copy.

And somewhere, I have a LP by Jim Croce (yes, that Jim Croce) which I've played twice because I found it ALL repellant. Another LP by the same artist I regard as one of the best records ever made. Pobody's Nerfect, as the T-shirt says.