busman's holiday แปลว่า

"I shall indeed take a holiday soon, probably on the Continent; but it will be a "Busman's Holiday." The bus-driver spends his "day off" in driving on a pal's bus, on the box-seat by his pal's side; and I know that night after night, all through my holiday, I shall be in and out of this hall and that theatre, never happy except when I am watching some theatrical piece or Variety entertainment."

"Is not the following a rather notable instance of "the busman's holiday"? At a recent meeting of the Twickenham Education Committee Mr. F. W. Pearce, who is surveyor to that body as well as to the urban district council, was asked what progress had been made with regard to the affixing of tablets on historic houses in the district. To this Mr. Pearce replied that he felt responsible for any delay in the matter, but would devote to it the first week of his holiday!"

"In his [a private detective's] opinion one of the chief defects in detective stories—for he was given to busmen's holidays—was that authors made their 'sleuths' like unto the angels, watching for days without, so to speak, taking their eye off the ball. It was not so in real life."