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1)f-word-ing nasty. 2) Fuggin' nasty.
The grease dumpster behind McDonalds be FNASTY twofold.
by PTchi July 09, 2005
8 2
Simultaneously fat and nasty

-When an object exceeds being fnasty, the word "fnastier" is used instead, but pronounced as if it were French: "fnastiyay"
That girl is fnasty, but her cousin is fnastier.
by Le'Kiesha April 23, 2007
0 2