Toilets: The Past and Future of the Flush https://t.co/HNzFqaZU7B via @howstuffworks https://t.co/TK2EdjxsWk

Toilets: The Past and Future of the Flush https://t.co/HNzFqaZU7B via @howstuffworks pic.twitter.com/TK2EdjxsWk

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