Note: the author does not necessarily condone the use of this somewhat sexist term. In other words, don't hate me - I didn't invent it.

Butterface: noun.

Usage:

"Man, do you see that girl over there? She is HOT!"
"Nah, dude... she's just another butterface, yo."
"Butterface? What the hell does that mean?"
"Everything looks good on her, but her face."

Hence, the word butterface - slang for a woman with an attractive body, but an ugly face. Brilliant, eh?

I happened upon this term while working a particularly shitty blue collar job upholstering boat furniture last summer. You can learn a lot toiling away in the pits of the American working class.