Bronies are 18-30 year-old manchildren and zoophiles who are fans of the animated series My Little Pony: Friendship is Magic, a show intended for little girls. When they're not fapping to the show, they're drawing Rule 34 fanart of the characters from the show. They can mostly be found on sites such as DeviantART and Tumblr, where they spend their days making their own ponies using Adobe Photoshop. Adult female fans are referred to as Pegasisters, they are less terrible.
Leafy has reacted to them a few times on his channel. The first Brony-related thing he reacted to was the trailer for a canceled MLP dating simulator called Dark Skyes. Leafy later made a video about a member called TootsieRoll2.
- They're like Weeaboos, but more gay and they're like furries, but more cancer..
- If you search for long enough, you'll find a "ponified" version of every fictional character, from Edd Gould from Eddsworld to fucking Sonic.
- The fandom originated off of 4chan. That should say something.