A person who will participate in sex without emotional attachment, allowing you to remain "friends". Stereotypically used to describe a female.
Guy 1: Dude, are you and Girl sleeping together?!?
Guy 2: Ya, but she's just a fuck buddy. No worries bro.
Guy 2: Ya, but she's just a fuck buddy. No worries bro.
by --Anon-- July 11, 2008