Pin the Tail on the Donkey is a game played by groups of children. A picture of a donkey (or possibly another animal) is tacked to a wall within easy reach of the children (usually to a large cork bulletin board). Then each child in turn, one at a time, is blindfolded and handed a paper "tail" with a push pin or thumbtack poked through it. (The picture of the donkey is missing its tail). The blindfolded child is then spun around and around until he or she is probably disoriented (and possibly pleasantly dizzy). Then the child gropes around and tries to pin the tail on the donkey.
The player who managed to get their tail pinned closest to the right spot on the rear end of the donkey (the target) wins.