Games to play by a canal

This kept me entertained for about an hour. The kids hanging out by this wall had invented an ingenious game: they were deliberately dropping their football down onto the canal path, then very convincingly, pleading with whoever was walking past to chuck it back up to them. Each person who did, was clearly delighted to have helped out. But, as soon as the kind soul who'd lent a hand was out of sight, they 'accidentally' dropped it again. I think it was the acting, and the taking advantage of other people's generosity that appealed. It sadly backfired later on, because one member of a group they dropped the ball on, hoofed it into the canal. Guess they'd fallen for it before...