1x14 - My Little Pony: Equestria Girls - Summertime Shorts

During lunch in the CHS cafeteria, Rarity sees a picture in a magazine of Countess Coloratura falling over in yoga class and embarrassing herself. Sunset Shimmer muses about the thought of having one's most embarrassing moments broadcast to the world, and this gets the rest of their friends thinking about such "epic fails" they've had in the past.