Bobbi-bobbi

In Aboriginal mythology (specifically: Binbinga), Bobbi-bobbi was a snake who sent bats for the people to eat, but the hunters could not catch them. Bobbi-bobbi threw one of his ribs to the men and they used it as a boomerang to kill the bats. When the men used the boomerang to make a hole in the sky, Bobbi-bobbi took it back and ate the two men who had tried to hold onto it.