1 definition by i'm sick of a fat nightbitch

A rude person who obsesses over bands such as Nightwish, who write overly-poetic and overly-dramatic lyrics that depressed kids confuse with being beautiful and deep. They more often than not have some kind of deluded crush (or borderline obsession) on keyboardist/lyricist Tuomas Holopainen and suffer from Münchausen by Internet.

Or anyone you dislike who likes Nightwish
You should have known Melissa's a Nightbitch.
Get the Nightbitch mug.