Top definition
A thin person who exhibits traits that are normally found exclusively in fatties, however due to compulsive exercise or a fast metabolic system is not one him/herself.

Such traits include but are not limited to:

Eating like there's no tomorrow
Sucking dick/pussy better than a Hoover
Fucking for validation
Wearing party hats
Matt eats 6 supersized junk food meals a day, he is such a closet fatty.
by Lewis5D January 31, 2008
Get the mug
Get a closet fatty mug for your buddy Yasemin.

Available Domains :D

  • closetfatty.se
  • closetfatty.com
  • closetfatty.net
  • closetfatty.ninja