f'pants
A fancy word for someone who's too proud to be seen with anyone who isn't also fancy. It can also mean something really good, but it's still a bit of a show-off.
He's a total f'pants. He wouldn't be seen dead with a burger in hand.
That dress is f'pants. It costs more than my whole month's rent.
She said my dog was a f'pants. I told her to shut up.