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a bachelorette party in which all participants are obese and unattractive.
Hey man, wanna go to Jake Ivory's tonight?
NO WAY...there's always a fatchelorette party there!
by 520668 January 25, 2008
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FATchelorette Party or for men, FATchelor Party – When you know you are starting a diet and/or work out routine, you consume all of your favorite foods that you love and would never eat ever again. a.k.a. You’re last day of food freedom.
Before I start my diet tomorrow I'm going to have a good ol' fashioned FATchelorette party, with brownies, ice cream and cookies!
by PoundForThought July 18, 2011
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