An incredibly loud and disgusting fart. This title is reserved for the most foul, rotten-smelling farts.
I was in the elevator and some jackass cracked off a fat nasty.
(n., pl.) The multitude of women that can be found on the Internet from either personal sites or chat rooms. These women can be easily detected by their obesity and sub-average physical attractiveness.
Yeah, I tried looking for a woman on those Internet personal sites, but all I came up with were a bunch of fucking fat-nasties.
A fat and nasty person.
Person 1: OMG shes fucking fat
Person 2: What a fucking fat-nasty
adj. The simultaneous feelings of disgust and contentment that a person feels after having been so hungry that said person stuffs his or herself so that they can barely breath without exploding.
I was so hungry during class, but after I went to Philbrook and ate everything in sight I felt wicked fat-nasty.
A disgusting greasy fat girl.