Ok I have another one....

You know its a FF when:

...you wake up one morning and realized 6 months of your life went by and you don't remember wtf happend...

Then you look on your floor and find a video game case and your memory card has a save file with the game beat...

Then you smacked yourself in the head and realize you just wasted the last six months of your life using all your free time to get all the stuff on the most recent FF.