Brad Pitt insisted that 'Bullet Train' have a smart toilet: Here's why

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Brad Pitt has a love story in "Bullet Train," the comedy thriller that gets its digital release Tuesday.

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Pitt's assassin character, Ladybug, becomes instantly enamored with the high-tech smart toilet aboard the film's Japanese high-speed train.

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"There are beautiful gems in the script. ... And then there are beautiful gems when Brad Pitt says 'smart toilet,' " Leitch adds.

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The art department hastily set up the modern toilet, and the effects teams made the system work like the real thing.

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before shooting scenes of Ladybug discovering them while hiding in the train's lavatory.

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For a physical gag, the smart toilet winds up playing a major role in "Bullet Train." 

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Pitt was so inspired that he came up with an anti-toilet paper line for his philosophy-spouting assassin.

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However, Pitt's love for the smart toilet isn't the only coupling in "Bullet Train." 

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The thriller features an actual human romance involving Bad Bunny's Wolf in flashback. 

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