A boomerang is a tool, typically constructed as a flat airfoil that, when thrown, is designed to Boomerangs can be variously used as hunting weapons, percussive musical instruments, battle clubs, fire-starters, decoys .. In international competition, a world cup is held every second year. Throwing takes place individually. In a four-man World Cup team from the U.S. traveled to Paris, France with the U.S. teams did it again in Hamburg, Germany, taking first and second place. It will be the 17th World Boomerang Cup, with the first ever World Cup held in Amherst, USA in Europe has some of the worlds best.