According to Urban Dictionary:
A Brony is:
A name typically given to the male viewers/fans (whether they are straight, gay, bisexual, etc.) of the My Little Pony show or franchise. They typically do not give in to the hype that males aren't allowed to enjoy things that may be intended for females.
Typically refers to 13-30 year old male fans of the 2010 reboot of the show My Little Pony: Friendship is Magic, but may also include females (see fillies).\
Fans of the new G4 My Little Pony show "My Little Pony: Friendship is Magic". Mostly refers to the older male viewers of the show, but female fans use it too. A Brony is generally pretty involved in the community at large.
Brony is a village in the administrative district of Gmina Krzyżanów, within Kutno County, Łódź Voivodeship, in central Poland. It lies approximately 12 kilometres (7 mi) south of Kutno and 40 km (25 mi) north of the regional capital Łódź.
[Insert clopper here]
M_T_M: (cause he gets his own section)
All the Immature Idiots of the world(not mentioned above)