The phenomenon of adult male fans flocking to "My Little Pony: Friend is Magic" is by now well acknowledged, and now there's even an ad and a documentary depicting the "brony" cultural trend.

A recent "My Little Pony" parody ad has been uploaded on the College Humor YouTube channel. The "My Little Brony" parody ad depicts brony toys and little girls mocking the stereotypical behavior perceived to inhabit the adult "My Little Pony" fans.

Check out the "My Little Brony" ad below:

"Surely if you're a fully grown man devoted to the animated show "My Little Pony: Friendship is Magic," you'd have developed a thick skin by now, but this parody ad would have to make even the proudest, fiercest Brony flinch a little," writes MSN Now.

So far, the videos have caused polarizing reactions.

"I'm a brony and I find this hilarious. We should all be able to laugh at ourselves and our ridiculous fandom. Because for way too many cases, this video is accurate," writes Youtuber Snuff Gyftie.

"Bronies do not do that, yet another wrong stereotype," says Sparkxtube.

"I don't mind that they watch the cartoon, but when they sexualize everything that's where I draw the line," says TheMcbiscuits.

And in case you're still confused about the "My Little Pony" phenomenon that seems to attract grown men, there is even a documentary about it!

"Bronies: The Extremely Unexpected Adult Fans of My Little Pony" is a documentary directed Laurent Malaquais, the documentary has even been reviewed by USA Today!

Check out the trailer for the documentary below: