Sweats.

JERRY: Again with the sweat pants?
GEORGE: What? I'm comfortable.
JERRY: You know the message you're sending out to the world with these sweat pants? You're telling the world: "I give up. I can't compete in normal society. I'm miserable, so I might as well be comfortable."

And here it is, THE COLLEGE GIRL'S GUIDE TO WEARING SWEATPANTS.