A particularly large person's fat around the opposable thumb region.
That lady was so rotund, her nub fat had two chins.
by doublechar June 09, 2010
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Another way of saying someone’s really fat and a dick head
1. Ur ugly

2. Shut up fat nub

1. Gee I was just joking I’m not even that fat

2. Bro you are a sumo wrestler
by JJleo May 21, 2019
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