1 definition by FoxyJ
PSS is an unfortunate and humiliating syndrome. It occurs when a skinny person becomes fat - and has yet to realize it. Although their physical appearance has changed drastically - this person still exhibits skinny people behaviour.This behaviour includes sitting on laps, bouncing around and wearing tight, revealing clothing.
"Wow Laura totally has Phantom Skinny Syndrome (PSS)She's crushing that poor guy's lap - and that's the same shirt she used to wear when she was 6 sizes smaller...
by FoxyJ April 30, 2009