fnasty

1)f-word-ing nasty. 2) Fuggin' nasty.

The grease dumpster behind McDonalds be FNASTY twofold.

by PTchi July 09, 2005

fnasty

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