The Adventures of Tom Sawyer by Mark Twain Chapter 16 Page 23

and they went out on the sandbar and lay down to sleep. They got scorched out by and by, and drearily set about getting breakfast. After the meal they felt rusty, and stiff-jointed, and a little homesick once more. Tom saw the signs, and fell to cheering up the pirates as well as he could. But they cared nothing for marbles, or circus, or swimming, or anything.

He reminded them of the imposing secret, and raised a ray of cheer. While it lasted, he got them interested in a new device. This was to knock off being pirates, for a while, and be Indians for a change. They were attracted by this idea; so it was not long before they were stripped, and striped from head to heel with black mud, like so many zebras — all of them chiefs, of course — and then they went tearing through the woods to attack an English settlement.