Due to the inexplicable popularity of Ten Pounds of Fetus and Mouthwash, I've gone through Kieth's computer to see if I can find any more stories. I think I have just the one.

Possibly the last story written by Keith Arthur before his conviction as a paedorast, Tecnical Difficultes is a rather disturbing look into the mind of a rapist author and his idea of erotica. While drunk.

Derpy derps around for no reason, when she and her disembodied ballsack (her husband?) go hame and take Dinky over to Rainbow Dash's house so that she can play with Scootaloo, who is now Dash's daughter, I guess. A male pegasus without a name shows up, apparently being Scoots' father, but he leaves before much is explained. Finally, Derpy discovers Dash's horrible, horrible secret.

Also, two bonus chapters are included. In a human!fic, can Derpy ever accept her daughter's horrible fetish? You bet she will, even if it kills her. And later, a depraved gameshow host murders the mane cast for fun and profit. This one was cancelled after one chapter.