That ain't it, that's just being nasty.
I like humor that is obnoxious. But it has to be funny, obnoxious isn't enough. I'll laugh at a good fart joke, but not at somebody who just makes fart noises. The comics in question are the visual equivalent of somebody making fart noises.
I think I might just start wearing the little electric chair even though it didn't quite go down that way. That's dark humor. And it's even funnier because it's historically wrong.