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2.
verb, past tense
(fat-ass-ed)

to waste time, to do nothing for a long period of time. the act of being a fatass.
Ryan: Wow I haven't done anything today.
Hannah: Same, I just sat at home and fatassed.
by Hannah412 February 06, 2009
 
1.
When something gives way or breaks due to a sudden increase in weight that was put upon it.
Wow! She really fatassed that beach chair! We had to throw it away!
by sporto March 28, 2006