What is your favorite insult?

None that I can say here without getting banned again. So sorry.

Yo' momma is so nasty she had to cut the string off the tampon so the crabs wouldn't bungee jump.

Stinky Stinky Poo Bum Head.
Was my one from grade school, no-one could beat that, the other one, which I cut-pasted to IRC is...
little puffy rat midget cotton tushed cootie infested freak of nature poo poo headed monstrosity of the seventh layer of heck pee pee breathed dookie eating pig luvin crab like bow legged creepy ass bulbous headed smaller than a bread box hollow brained gopher lickin intestine shaped bacon wrapped no soap using squid slurping botchilism growing crotch scratching one balled accidently birthed filth spreading juice producing greasy palmed fart leaking ball of crap shaped like a little man!

Mine is too rude to say here in full, but

*** guzzling *** monkey

Tu madre, por favor.

Hmm...when I'm really pissed? Heh. Something along the lines of comparing the person I'm pissed at to an infected boil on the arse of humanity.

How appropriate. You fight like a cow.

Lazy buttnugget

I sheba, chincha pabo.

Or, for an English insult...

Scruffy-looking nerf-herder.

El Pollo Diablo.

...devil chicken?

You silly little muppet.

Yes.

I want to translate that so bad..

Usually it depends on what the person says to me, but I think my favorite one would be.. "Go yourself running backwards with a corncob."

You son of a motherless goat

yO MAAMMAA SO HAIRY, WHEN YOU CAME OUT, YO GOTS RUGBURN!

...ewwwwwwwwwww

Asshat.