look up any word, like fluffer:
One who stays up all night, usually on the computer. They enjoy talking to people on their buddy list in a very sexual way. They often crack jokes about transexuals, prostitutes, sex, rape and other related topics.
That girl is a nocturnal slut. She's online until 6 a.m every morning trying to seduce everyone on her buddy list.
by Justin Reed August 25, 2006