well my dad first found out when me my brothers and him all went to the mall. i asked him if he could buy me a fluttershy shirt. of course hes response was "isn't that show for girls?". so i told him i'm a brony and he hasn't said anything since. and judging from that and the fact that my wallpaper on both my ipods, my computer, and my ps3 are all my little pony, not to mention i blast my little pony episodes and dubstep in my room speakers i'm going to guess he doesn't care