Applejack x Big Macintosh

Every year in Equestria, all stallions go through heat - a time when their rational judgment is overridden by the need to rut any mare they come into contact with. Thankfully there’s a herbal remedy that allows them to ease the symptoms and live somewhat normally during this time. But what happens when there’s a shortage of the herb in Ponyville?

WARNING: Contains incest, rape, and impregnation.

***Guys, I know stallions don't actually go through heat. But in Equestria, who knows? In this story, stallions go into heat and mares are always receptive.