How to get rid of signatures?

I really hate signatures on web forums -tedious, arrogant, repetitive and pointless.

I've selected the option not to display user sigs and it seems to be working in most cases, but I can't seem to get rid of Ass2Cam's monstrosity. He's obviously done something which defeats the code of this web site so that his egotistical and boring sig is ever present. Any advice on how to remove it?

I don't think that's a signature.

I'm not sure, but I think he' copying that text into the body of his posts.