I was watching a video on YouTube about episode of children's shows that were abnormally dark and one was Party of one from MLP. I had no desire to watch this "little girl show" and had some rather bad preconceptions about bronys. But my curiosity got the better of me and I watched the episode I had heard about. At first I was like this shows kinda cute, I guess, but that "cereal box's" fake accent really puts me off, (Applejack's one of my favorite characters now) and why does everything have to be a horse pun.
Well several weeks passed and I couldn't get that show off my mind, so I went back and watched another episode, which led to another and another. Then the unthinkable happened, a certain pony who looked oddly familiar said allons-y. After this I knew I had been assimilated into a new fandom and resistance would be futile.
I eventually shiped out to basic and the whole time I was there I had this new fandom on my mind. Then after dropping subtle (some were less subtle) references the whole time, on the last week I walked into the dorm and someone was drawing their OC on the whiteboard. This was my first encounter with a brony and I learned that my preconceptions about bronys were very wrong.