How would you describe this button's shape? Is it a wonky acorn or a double-tiered hand grenade? Maybe it's a top or an abstract pear? It sort of looks like a psychedelic dreidel, but then again there's an organic look to it. My friend, Doreen, calls it a mushroom. Whatever it is, the thing's made out of butterscotch Bakelite. Tapered at the end, the carved grooves swirl to a point like an object meant to be spun. Knoblike and smoothly sculpted, this buttery rogue is one of my screwiest mystery buttons.