A person, typically female, who is simply on a mission to suck, stroke, or ride the male genitalia. 84% of any given day, this person is thinking of massive cock. They often love to be ejaculated on.
Kristen couldn't keep her hands out of my pants, I think she's a mushroommenace.
The praise and dedication to mushrooms, be it real mushrooms or magicones from Mario.
Practices of Mushroomism require life dedication to The Almighty Covan of Mushroomity, consuming extortionate amounts of multiple mushroom types, or just simply extreme procrastination playing any form of Mario game.
When a male sticks his penis in a rectum and then proceeds to slap the male/female in the face with his penis, leaving a brown spot what looks like a poopie mushroom.
I was pissed at my girlfriend so I stuck my dick in her butt and gave her a poopie mushroom.
When a guy wears skinny jeans, is wearing a belt, and still has his pants sagging...the big fluffy wad of boxers hanging out of the top of his skinny jeans is the "boxer mushroom."
"That guy's boxer mushroom is definitely not hot. I mean, what's he trying to do? Contain a fart?"