Top Definition
a belief or doctrine that inherent differences among body size determine individual achievement or worth, usually involving the idea that skinny people are superior and have the right to rule fat people.
"Hey man you constantly hide behind me during dodgeball games, ask if I want butter when I try to walk through a door, call me when they run out of floats at the pool, and try and see how many small children you can fit in my pants. I'm so tired of your fucking obesism you scrawny cocksucker."
by McAlfy October 15, 2009

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