Select a boy and hand him a knotted handkerchief. He must throw the
handkerchief at a player, and before he can count aloud five the
person to whom it is thrown must mention a round thing, such as an
apple, a globe. If that person fails, he must change places with the
one who has caught him, and throw the handkerchief at another. As no
repetitions are allowed it will soon be difficult to find an object
that is round.