mushrooms, found growing in cow manure which can be picked and either smoked or eaten, but most people prefer to eat them. They are hallucinogenic and when a good amount is taken you can have an amazing trip or a terrible trip.. but this mostly depends on what mood you are in when taking them. For example if you are in a good mood then you're likely to have a good trip but being in a bad mood or worrying about something will most likely give you a bad trip. Mostly though people have good trips, as they take them whilst in a good mood.
I had a party a few weeks back and a few people took some of the shrooms, one guy only had one and he was on the trampoline and he looked at the marquee that the party was in and saw a magical, marble, fairytale staircase leading to it and he went to step onto it to go to the marquee and he fell off the trampoline and faceplanted the floor. Was quite funny really. But another guy took a handful and he was hallucinating quite a bit. He was seeing giant marshmellows, was going around shouting shag it, and pretending to shag the poles holding up the marquee, he said he saw a deer leap over the hedge and he kept searching for me shouting my name because he said he couldn't find me when i was right in front of him or when he was lying on my legs or something and when he'd eventually find me he'd keep telling me he loved me and that he was sorry he left me.. over and over.
They both felt like shit in the morning but they both had fun when they took them so it was all worth it they said.