This is a true story, not a hallucination. I once had the opportunity to down 25 grams over the course of an hour. It was quite a feat, but I ate it all, straight because I'ev learned to stomach it. The mushrooms soon gave me a fatal heart attack. I died in spasms and became a ghost.
As a ghost I became aware of all the other ghosts. A few of them knew how to manipulate real space, and one taught me how to do it. When I'd mastered it I ate another 25 grams of mushrooms as a ghost. This gave my ghostly body a heart attack and I died as a ghost and came back to life as a human being.