I told my mom about bronies and such, she basically said it would be a great opportunity to brush up on drawing.
My mom's pretty accepting of just about everything. She's religious, but she doesn't really believe in anything that expects you to be intolerant or to hate. She has no problems with any loveuality, and really has no quarrel with anyone. I really respect her for that, and she's hilarious.
One day she walked into my room with a plate of pasta and said "I swear, if you say it's gross I'll have to cut you" and then she walked out of the room.