You, sir, are hideous and dumb and I don't think I like you.
Well rub my drool and cum jizz inside my pube and lick it up, why don't you.
You smell like sponge vomit. And you, madam, are a cow and a hat!
Hump a baby, you weirdo.
You, sir, are freaky and disfigured and you're just not very nice.
I'm going to sneeze puke in your absurdly stuffty earlobe.
Your sister jizzed on me and she loved it.
http://orteil.dashnet.org/randomgen/?gen=insult.txt