1 definition by John G E
Post Fat Syndrome. People with PFS have large and completely undeserved quantities of self-confidence. They are invariably wankers but nothing will lead them to accept this. The condition, and the undeserved confidence, is usually, but not always the result of significant weight loss.
Yeah, he used to be a typically fat loser, then he lost the weight and got PFS, now he's even more annoying!
by John G E June 6, 2005