To steal a large some of money from someone. In particular, by building up a reputation high enough to convince people you are an honest person, then using your reputation to get a large amount of money sent to you. Once you recieve the large ammount of money the actual FIJIing occurs, when you run off with it (and lose it).
Fiji - to steal a large some of money
Fiji'd- to have a large some of money stolen from you
Fijiing- the act of stealing a large some of money