Pinkie's Brew is a song from FIW (Friendship is Witchcraft): a good My Little Pony: Friendship is Magic spoof. It became even more popular when TLT (The Living Tombstone) made a remix of it. The song is about how Mr. and Mrs. Cake died, and Pinkie Pie is trying to bring them back to life through time witchcraft. It's a very popular My Little Pony fansong, and even anti-bronies have admitted it's extremely catchy.
