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a fear of a fat person falling or seeing a fat person fall. Derived from the movie Jackass 2.5
Becky experiences fattyfalldownaphobia everytime her uncle is on a ladder.
by pennymadison March 28, 2008
a condition where a man or woman who is heaver than 300 pounds is afraid of heights and or falling
Collin: why won't preston go skydiving

Carson: oh he has a severe case of fattyfalldownaphobia
by wrestlersallianceleader November 08, 2011