AustLit

'A boy burns his buttocks after trying to photocopy them, causing him to feel pain whenever he sits down. He then helps his grandfather find a water-holding frog, but they get trapped in the desert without water. Knowing that neither of them can go on any further, the boy sits down on his burnt bottom and tears rush from his eyes as he feels the unbearable pain. His tears fall onto the ground, causing a ton of frogs to appear on the ground and the grandfather's wish is granted.'  (https://en.wikipedia.org/wiki/Unmentionable)