Funny Insults:

I researched your entire family tree and it seems you were the sap.
You are so old, even your memory is in black and white.
Moonlight becomes you -- total darkness even more.
You inspired the slogan, "A mind is a terrible thing to waste."
If assholes could fly, this place would be an airport
You are proof that evolution CAN go in reverse.
Brains aren't everything. In fact in your case they're nothing.
Don't you need a license to be that ugly?
I look into your eyes and get the feeling someone else is driving.
I love what you've done with your hair. How did you get it to come out of one nostril like that?
I refuse to engage in a battle of wits, as I will not take advantage of the handicapped.
You fear success, but really have nothing to worry about.