When i was little there was a shop nearby my house that was selling edible rocks YES they tasted like wet soil and it was gooood i ate them everyday until my stomach started hurting because the rocks ive eaten, when we did an mri scan the docters saw the rocks i have eaten made a big ball of the rocks in my stomach when i told my mom about the shop she sued the shop and i had an operation to remove it :3. After that the shop had to fill all the hospital costs and stopped selling those rocks.