Tariff
Someone with a top hat comes and tells you that your grains are going to be taxed from now on. Top hat man says there is a tariff that's been enacted on grains. Rice? Triple the price. Wheat? Quadruple.
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You're listening to all the things in this tariff and you finally get fed up and ask what isn't being taxed now. The top hat man looks at you and smiles, holding out his hand. In his hand is some soap (そ).