Why do we hallucinate on "shrooms"?

Mushrooms, aka magic mushrooms, shrooms, and a others, can cause hallucinating. Hallucinations are when your mind sees different things than what are truly there. psilocybin is the chemical in mushrooms that cause the hallucinations. This chemical is found in mushrooms, but not strong. The mushrooms must grow, typically in cow feces. The feces allows for the psilocybin to multiply and the effects strengthen. ODing on "shrooms" is a rare occasion, usually needing to consume the amount of weight in mushrooms as you weigh yourself. This can prove that psilocybin is not deadly. Psilocybin can slowly kill brain cells on the other hand. Mushrooms may sound like a good and fun idea, but they can still be dangerous, mostly by the actions they can make you do.