a person who makes your brain act rogue nasty. only thinking about that person gives you a sexual trip, like shrooms do, and it makes you euphoric, like amphetamine does.
A person who abuses the use of psychedelic shrooms. Will always take shrooms at any given opportunity and will brag about tripping while playing video games on social media sites like Twitter for attention.
George is such a shroomhead, he does psilocybine every month, then brags about his trips on social media.