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When, because of all the sex you've been having, you have lost all the fat on your body. This can be because you have had to stop eating, or been spending so much energy. Usually stopped by bringing whipped cream to the bedroom.
Stacey: "Holy crap, your boyfriend has lost alot of weight! He's skin and bones!"

Jane: "Skin and boners, actually."
by Ploofy4 April 23, 2010
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