He was morally certain that the captain had been going to say “screw loose.”
Well, thought I, there is some screw loose—and a pretty big one I fancy.
He says she has a screw loose, because she wants to go on the stage.
"There's a screw loose somewhere," Rufus said to himself, with a smile.
"There's evidently a screw loose somewhere," he said to himself, with a smile.