Pegamisters are the New Bronies
Bronies, for those who are too busy being stuck inside a bigotry-reinforced bubble of 80's button-downed conservatism to know, are non-traditional fans of My Little Pony.
Since MLP is aimed at little girls (or boys, if they wish to think of themselves as such, who am I to judge?), this means that even teenage and adult females are technically 'Bronies.' Bronies have in many ways been pivotal in crossing gender lines.
Some female Bronies have actually taken on the title of Pegasisters, to denote their difference from the more visible and controversial males Bronies, who often paint their hair and nails in bright MLP colors. It should be noted however, that not all male Bronies accept this diversion, and prefer to keep the mares in their place, by insisting they keep the BROny label.