I don't usually collect insults but the list reminded me of something my father said once, he referred to an ex-student of his as the finest argument for retro-active birthcontrol he'd ever met. We were in a restaurant at the time and the waitress was just coming to the table, she had to turn around she started laughing so hard. I think I remember it more for her reaction than anything else.

I'm partial to not the sharpest tool in the shed.