Another story I did by request. Twilight Sparkle (of the human world) is having a sleepover at Sunset Shimmer's house, when she starts having major gas problems. Sunset tries to show her the bright side of the situation, leading to a farting contest.
Contains: Fart (obviously). If you find it funny, or have a fetish for it, read ahead. If not, turn back because this story's not for you.
Probably won't be my best work by a longshot, but I can't ignore requests when likes for my stories are so rare.