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Boong-Ga Boong-Ga (Korean: 붕가 붕가, Japanese: 浣腸ゲーム kanchō geemu), also known as Spank 'em, is an arcade game developed by a South Korean company, Taff System. It is the first arcade game to simulate kancho—a popular prank in Japan where the victim is poked with two fingers in the anus whilst distracted.
A promotional poster for Boong-Ga Boong-Ga
The game received infamy on the internet in 2001 for a badly translated advertising flyer that promoted the game's peculiar spanking and kancho oriented gameplay. Boong-Ga Boong-Ga was reportedly designed for the Japanese market, and according to advertising material was well received at the 2000 Tokyo Game Show.
The object of Boong-Ga Boong-Ga is to score points by spanking or performing kancho on a model of a human posterior embedded in the game's cabinet. A plastic finger is attached to the machine for players to perform the latter.
The game features eight characters players can punish: "Ex girlfriend", "Ex-boyfriend", "Yakuza|gangster", "Mother in law," "Gold-digger," "Prostitute," "Child molester," and "Con-artist". During gameplay, the facial expression of the chosen character is displayed on a monitor.
The game also dispenses cards that rate players on their "sexual behavior", and for players who perform exceptionally well the machine will dispense a small plastic trophy in the shape of a pile of feces.