An accident that occurs from being too fat.
I injured myself trying to get out of the constrictive booths at White Castle because I am too fat. I had a fatccident.
by william33 September 13, 2011
Un-noticed at first or accidental weight gain, which leads to your fatness preventing you from doing something
"Hey where's Dylan? This pool party is awesome!"
"He had a fatccident and couldn't do up his swimming shorts so he's not coming"
by deelun January 12, 2012

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