"Yes."
"And you won't tell Michael?"
"No, no, no!"
"On your word of honour?"
"Yes."
"Swear by all's blue."
"Yes."
"But that's not swearing."
"I don't know what all's blue is. Ouch!"
The boat, drifting, had drifted up against the wall of the cave, and the swell, which had a rise and fall of eighteen inches or more, was grinding the starboard thwart lovingly against the seaweed and rock.