a person who finds great joy in excpressing their dislike for obeisity by causing their boy/girlfrien to loose weight; typically through such means as anorexia nervosa or excessive sexual conduct.
Tina, that defatafier, look at how skinny her boyfriend is now. he used to be so funny but now he's skinny. Damn
by mathias hughey November 06, 2003
someone (tina) who has defatafied another person (me....)
tina making me skinny.....i still think i'm fat
by mike ward November 10, 2003

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