My parents had a better variation when they were younger.
They used to live in a narrow street. They would tie a piece of string to the door handle of one house, cross to the opposite side of the road and tie the other end of the string to another house. Then they would simulataneously knock on both doors and scarper.

(,
Wed 22 Oct 2008, 15:44,
archived)
They used to live in a narrow street. They would tie a piece of string to the door handle of one house, cross to the opposite side of the road and tie the other end of the string to another house. Then they would simulataneously knock on both doors and scarper.
