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When I was little, I used to watch a television programme called Mr Benn. Each episode, the eponymous protagonist would walk along Festive Road to the fancy dress shop. Each episode, with a ding!, the shopkeeper would appear, and suggest a new costume to him. But when Mr Benn had donned the costume and left the changing room, the door would open not on the shop but on the world that went with that day's costume. In the one I remember most clearly, Mr Benn dressed up as a Red Indian. He made smoke signals and saw totem poles, and at one point he was chased by Cowboys. But cunning Mr Benn swam down a river, then walked backwards through the sand to some nearby trees, and climbed up to make his escape. When the Cowboys came along later they saw his footprints and assumed that he had walked from the trees to the river, rather than from the river to the trees.
Clever Mr Benn.