through one's hat

“We have met since then, Baron Domiloff, I think,” he said, “and even you must admit that a revolver bullet through one’s hat is scarcely a message of good will.”

Prayer to him was "talking through one's hat."

Meanwhile I appeal to the Editor of The Westminster Gazette, who, in his Saturday edition, has done so much to maintain the practice of classical composition, to offer a prize in one of his periodical competitions for the best Latin version, of "to buck up," "to stick it out," "a bit thick," "talking through one's hat," "I don't think," "blighter," "rotter," and "not 'arf."