Top Definition
A situation in which you gain quite a bit of weight without realizing it.
Having not seen him for a few months, Heather says to Barry, "Gee weez, Baz, I almost didn't recognize you!"

"Yeah, I know, I’ve had a serious case of fat creep, hadn’t jumped on a scale for a few weeks and boy did I get a real shocker this morning, I’m going to download an App for Fat Creep to melt this blubber for good.”
by Girl Banker September 23, 2011
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.