"Hallucinogenic mushrooms" refers to a type of mushrooms that contain substances known as hallucinogens. These substances can cause hallucinations, which are experiences that make you see or hear things that are not really there. Full definition
Call it a «shroom with a view: Researchers at Johns Hopkins University found that people who took psilocybin, the active ingredient in hallucinogenic mushrooms, ranked the experience as one of the most meaningful experiences in their life. (discovermagazine.com)
49 Power of Hallucinogenic Mushrooms Revealed People who tripped ranked the experience as one of the most meaningful in their life... (discovermagazine.com)
Jurors weren't allowed to hear testimony that Bill Cosby's chief accuser was once hooked on hallucinogenic mushrooms or had her sights set on becoming a millionaire, but that hasn't stopped the defense from airing the explosive claims about Andrea Constand in the court of public opinion. (startribune.com)