A sheep loses its horns on the ground so it picks them up in its mouth to take them to someone who's morally good enough to attach them back onto its head. Sheep don’t have hands, so the sheep had to pick the horns up off the ground with his mouth. Someone evil would just murder the sheep and steal his horns, so the sheep must find someone good to reaffix them.

Since you are morally good, you decide not to murder the sheep and harvest its organs. Instead, as a practitioner of the good teachings of Zen (ぜん) Buddhism, you decided to help the sheep out. Your Zen teachings have increased the power of your healing abilities, so you fix the sheep up in no time.