Reupload for posterity. Original by cooljunkproductions.

Originally uploaded May 26, 2011:
https://www.youtube.com/watch?v=XibVs_o2ePI

Sourced from the Wayback Machine:
https://web.archive.org/web/20110706101230/http://www.youtube.com/watch?v=XibVs_o2ePI

Featured on Equestria Daily:
https://www.equestriadaily.com/2011/05/no-country-for-old-ponies-stranger-than.html