Boomerang Anything

Because why not?

The "Boomerang Anything" rule applies to any non-boomerang object that can be tossed like a boomerang and have it return like one as well. The rule most commonly applies to bananas, many weapons (such as swords and daggers), and even things that have no tossing capability like a crown or piece of jewelry. Boomerang Anything is one of the biggest middle fingers to Real Logic as it completely goes against the laws of physics, but since 17, no one should question it. If a wielder of a non-boomerang weapon can Boomerang Anything or if a non-boomerang weapon can be boomerang'd, it'd be a wise choice to apply that ability to use a weapon in a way it's not normally supposed to be used.