Oprah Winfrey's Disease 

When a chick, who is usually fat, gets skinny, then fat than skinny again. But she always ends up fat for a while, suffering from not being able to stay skinny. Named for Oprah's constant wait loss and eventaul regain.

Ted: That cow Hillary is fat again! She was skinny last week!
Pat: Poor bitch has Oprah Winfrey's Disease! She can't keep the wait off.

Oprah Winfrey's Disease by APT October 13, 2005