Takes place during "Fall Weather Friends."

Rainbow Dash and Applejack are pretty confident of themselves when it comes to competition, so much so that they dare each other in a series of challenges. Since Rainbow Dash won the strength test, it's her turn to pick a challenge for her and Applejack to take part in, but the challenge she comes up with is more than a little unusual — a challenge to see which one of them can take a cock up the ass the best. Spike seems to be all for it. Who will win?

WARNING: This story contains ass worship, rimming, anal sex, and foalcon.