“Then I'm in for it. That is, I think I am. What is it?”

“You'll promise not to tell?” said John.

“Honor bright.”

“It's only a little practical joke that I want to play upon one of the boys.”

“On who?” asked Dick, unmindful of his grammar.

“On Frank Frost.”

“Frank's a pretty good fellow. It isn't going to hurt him any, is it?”

“Oh, no, of course not.”

“Because I wouldn't want to do that. He's always treated me well.”

“Of course he has. It's only a little joke, you know.”