Sometimes, however, the story may prove a boomerang in the most unexpected way.

That's why I say submarine activities off the American coast will prove a boomerang to the foe.

Virginia's sarcastic comment had proved a boomerang and she had gained nothing by launching it.

"Poor Mr. Cardington's olive branch has proved a boomerang to himself, I fear."

"That ghost business proved a boomerang," was Tom's comment.

"That's true," said Frank, "but at the same time such an attack might prove a boomerang to the Germans."