What is Taste It Twice Diet?
1.
Medically known as bulimia nervosa, when food is forcefully vomitted by an individual (effectively "Tasting it twice"); popular (and rather playful) way of referring to it in the 80's and early 90's before it was widely acknowledged as a disorder. Still used in crowds that either (A) Are ignorant to the risks or (B) Don't give a damn about the risks and regard it more as a diet.
"Jessica doesn't stick around long after dinner...and she's lookin a little skinny...guess someone's on the taste it twice diet."
See
