I think if you watch the show and enjoy it (and your not a child below 10) then your defiantly a brony. The reason is because being above the 'expected age' yet still watching a show about 6 ponies running around solving problems is part of being a brony, it's just someponies take it further and make fan art and all that stuff, but that doesn't mean you can't be a brony because you don't do that yourself. Watching and enjoying the show is enough to make you one of us (Sorry if this confused you, it was very hard for me to write my opinion clearly)