It's a classic magic trick thought to date back over 2,000 years ago.
Involving three cups and three small balls, the performer creates a spectacle by appearing to make the balls pass through the solid bottoms of the cups, disappear, jump and generally bemuse and bewitch spectators.
So how about when a 'robot' does it? A wooden robot wearing sunglasses? A wooden robot powered by a hand-wound set of cogs and wheels?
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Yep, that's pretty weird...