A collection of insults

Ugly as a warthog and half as smart.

Unclear which of Newton's three laws of motion keeps his ears apart.

Understands English as well as any parrot.

Used to have a handle on life, but it broke.

Useful as a chocolate teapot.

Useful as a football bat.

Useful as a hip pocket on a T-shirt.

Useful as a kickstand on a horse.

Useful as a mint-flavored suppository.

Useful as an ashtray on a motorcycle.

Useful as dinosaur repellent.

Useful as tits on a bullfrog / bull / boar-hog.

Uses all three functional neurons for his best work.

Uses his head best for rolling Easter eggs.

Uses his head to keep the rain out of his neck.