Mumblety-peg (also known as mumbley-peg, mumblepeg, mumble-the-peg, mumbledepeg or mumble-de-peg) is an old outdoorgame played by children using pocketknives. The term "Mumblety-peg" came from the practice of putting a peg of about 2 or 3 inches into the ground. The loser of the game had to take it out with his teeth. Mumbletypeg was very popular as a schoolyard game in the nineteenth and first half of the twentieth centuries, but with increased concern over child safety the game has declined in popularity. Mark Twain's book Tom Sawyer, Detective...