I invented a new weapon. Instead of a BOOMERANG, it's a called a BOMBERANG. You have to throw it and run, because when it comes back it will explode at it's point of origin. Maybe a box of bomberangs could be "accidentally" lost in enemy territory. I can think of 10 or 12 uses right off the bat. If someone is catching up to you in an important bicycle race, FLING! If you are driving on the road and notice an annoying tailgator, FLING! Approaching bear? FLING!
Well, maybe I can't think of 10 or 12 uses, but that's just right off the bat.