Magic mushrooms are a colloquial term for the species of mushrooms that contain the psychoactive compounds psilocybin and psilocin. They are also known as psychedelic mushrooms, shrooms, caps, and boomers. Other names include Sacred Mushrooms, God's Flesh, Holy Mushrooms, and Philosophers' Stones used in religious and spiritual rituals. In addition, they are sometimes referred to as Blue Meanies or Golden Teachers based on their physical appearance. Regardless of their name, it is important to note that magic mushrooms should always be used with caution due to their potentially powerful effects. It is also illegal in most countries to possess or consume such mushrooms.