A fork of Rural Dictionary
1a: Rat- a small, omnivorous, usually disease carrying rodent. 1b: Morning star- a powerful club or mace. 1c: Rat Morning Star: a weapon/summoned monster forged from a dead rat tied to a stick and infused with Bankai energy, resulting in a 15' tall undead rat warrior with a giant pole attached to its tail.
Leo totally started kicking ass when he activated his Rat Morning Star! see also: Rat Flail