Switchback has been living in Ponyville for about two years now and everything is great. He's able to discreetly feed without anypony knowing about it, except for Pinkie Pie of course. He still hasn't figured her out entirely, but she's kept his secret so that makes her a good friend in his book. So why would she invite him to come to a wedding without disguising himself?

Takes place during and right after the 100th episode: Slice of Life.