Top definition
A large amount of semen, ejaculate
That bitch was so hot I busted a Fat Nut on her tits!!!
by DoctorVegas November 30, 2009
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2
The roll of fat that extremely over weight women have that hangs below their waist. (Not to be confused with phat nutz.)
"Damn dude, Misty has really put on weight since high school!"

"Yeah, I know, she has fat nuts!"
by Darren Hunt January 05, 2007
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3
A Fat ass person that is very poor and gay.
Oh my fucking god look at the fatnut being teabaged and smileing!
by Leo U November 06, 2006
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