Sumo wrestlers are back to slap out autographs at a powerful tempo【Videos】

The hand-stamp assembly line is back in full force in these strangely soothing Twitter videos, featuring top-ranked sumo stars.

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Oddly satisfying: watching sumo wrestlers in this hand-stamp assembly line 【Video】

Who knew listening to hypnotic hand-prints could be so relaxing?

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Champion sumo wrestler show off his amazingly efficient autograph production line 【Video】

As a sumo wrestler, it takes speed and precision to succeed in the ring, and to keep your fans supplied with autographs.

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