Fucking + Amazing = Famazing. Simple as. It is similar to Fularious and Fadorable, surely you can work out what they mean anyway. It is used to describe something that is so amazing you feel the need to put 'Fucking' in front of it, only this way, you don't swear.
a word to describe something that is truly extraordinary, something that can't be explained by humans with the use of pre-established words. it is possible that it is a conjoined word for fucking amazing? Also it is the definition and copyright of GabRich, that is all. :)