Door-knocking prank
A door-knocking prank, colloquially known variously as knock, knock, ginger; ding dong ditch; Chappy; and knock a door run amongst other names, is a prank or game that dates back to the traditional Cornish holiday of Nickanan Night where it was originally called Nicky Nicky nine doors in the 19th-century or possibly earlier. The game is played by children in a lot of cultures.