I've only been a brony for a month now maybe, I have now watched all the episodes and the movie and feel like I can call myself a brony.
I work at a toy store and we just happen to sell MLP merchandise. I had never heard about MLP or bronies before a group of grown men came in to the store and bought a bunch of little girl horse toys. As I was ringing them up I asked if one of their daughters or nieces was having a birthday party and they told me no the toys where for them. I figured it was a hipster thing liking a girls show ironically, but I like to know at least a little bit about everything we carry in the store so I started watching and now I'm pretty much addicted.