Fak (f-a-ck) is a term used by little scrubs on the Internet that arent allowed to use the word Fuck. Usually said by eight year olds on minecraft, club penguin, or roblox, it is one of the many terms used by them that mean something else. Some more examples are: [Shiz], [bish], [mother trucker], [arthropod], [butterscotch], [cerebellum], [chinquapin], and [chode]