Acronym for "fuck Facebook" -- generally used by computer programmers who realize how poorly programmed Facebook is. Also used by Facebookers who encounter bugs associated with the poor construction of the site.
A derogatory and offensive name used to describe mau5tards, aka followers of electronic music producer and performer deadmau5. Comes from the idea that mau5tards are so obsessed with deadmau5 they would eat his shit. Disturbing and gross right?
Fucking mau5turds, what's so great about some scrawny muthafucka from Canada???