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1.
To have bad taste in music, movies, people, and life in general. To compensate for limited physical attributes with an over-the-top-bordering-ridiculous-immaturity personality. AKA Patheticness.
"Dear mom and dad, my life has become rather FATSEXY for the past 5 years. I am going to kill myself."
by Ponce DeLeon February 18, 2003
 
2.
More cushion for the pushin'.
That woman was FATSEXY.
by Casey April 21, 2004