I am open about my Pony Love and I bribe all the guys in my RPG groups to watch the shows. I bake them cupcakes or other treats to get them to try the show out. I even made that offer to a guy at work. "Watch 2 episodes and tell me about them and I will bake you cupcakes or brownies. Your choice."
Hehe. For a friend's birthday, who is also a Brony (Or Pegasis if you prefer), I made her Gluten Free rainbow cupcakes. I was going to take my Pinkie PIe and custom her up as Pinkamina Diane Pie, and have her serve the cupcakes, but I got so sleepy and ran out of time.
When people tease me or make comments, I just laugh and tell them they can't make fun of it till they watch it. And inform that that all of my customers for customized ponies so far, have been men. And I tell them all about the Brony community and how great it is. They tend to shut up after a bit