A professor in Yunnan ate stir-fried mushrooms, lifted the tablecloth, and saw hundreds of tiny people marching underneath it like soldiers. When he raised the cloth higher, he reported, their heads came off and stuck to the fabric while the bodies kept marching in place. He measured them. They were two centimeters tall.
That account is neither folklore nor an outlier. According to records from a Yunnan hospital, 96% of patients affected by one particular mushroom describe seeing an abundance of little people or elves, often dancing, jumping, or marching through the real room around them.