I love every pony, but my top three would have to be (1) Pinkie Pie [I don't know any other pony that can ejaculate a party:
http://www.youtube.com/watch?v=IfxN0e68J3w&feature=fvwrel], (2) Trixie [I don't care what Hasbro does, if they don't make another Trixie episode, I'm gonna rage!], and (3) Derpy Hooves [Bring back her voice! She was perfect!!!].
As for why I need a pinch, our class just got another day off! :D