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The video uses a high-speed, satisfying demonstration of a tactile toy, which creates a 'brain scratch' effect that encourages viewers to watch the entire short loop.

A person uses a cotton swab to quickly solve a sliding block puzzle toy branded as HOTUNCLE. The video focuses entirely on the mechanical operation of the puzzle.

HOTUNCLE Sliding Block Puzzle: (a) it ACTS — the user is physically operating the sliding tiles to solve the puzzle, which is the entire purpose of the video. Removing it would leave no content.