An honest opinion of an MLP fan and a fan of yours
First off, the animation looks lovely. I read somewhere on your formspring that this took four days. To be honest, the animation looks great and the coloring and shading are amazing, too.
I love how you animated the fat brony's chin. I also like your take on the MLP characters. (he he badass rainbow dash).
I was also shocked to find out Chris O'Neill was in this cartoon doing a voice. He perfectly fit the role here and Redfeather wasn't too shabby himself. He really can pull of a girl laugh or girly hum.
Axel's composing did fit the tone of this cartoon in the beginning and the end as well. I like how it starts off all innocent but slowly gets to a creepy-ish kind of tune then goes all akward with the "...taste the magic." line.
However, as much as I like Shadman's art, sometimes his background art doesn't sync too well with other characters. Like, when he's doing a background of a certain angles, the characters look either bigger than an object in the background or the background simply looked too big. But It does fit other times.
I can also understand your message in this cartoon. As much as I love the show (I do consider myself a brony to some point) I do feel some people in the fanbase can take it a bit too far and some of them are kinda creepy, though.
Either way, it's a great little short from you and you did great. Keep it up.
(Late review I know :P)