Derpy. This song is hilarious, I love the first part. At first I had a hard time listening to the voice, but you build up a tolerence: http://www.youtube.com/watch?v=SsBw_eRFgmo
My sister caught me watching this, so I replayed it for her. She liked it, but didn't fully understand it. She knows about Bronies, but not very much, I think I dropped just enough info to get her interested in doing individual studies on this phenomenon.
She will be a Brony by the end of the year, if all goes according to plan.