You're probably quite strange if you think a nun is a N.I.L.F., but I'm not judging.
Guy A: "Oh man she is such a NILF!"
Guy B: "...That's just wrong..."
literally. plain and simple. in a room, in a bar, in a strip club, in a whole town even, eg. Bremerton, Tulsa. or a whole country. you can fill in the blank there.
thanks to a friend for thinking of this one.
complete opposite of milf or any ilf object of desire.
that strip club had NILF in it so we bailed. the hottest thing in the place were the crabs in her crotch.