Candy
What do you eat like a machine? Candy!
Picture your mouth opening and closing really fast and hard as candy on a conveyor belt goes sliding in. Munch, munch, munch, you're a candy machine!
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あめ
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This candy in particular is just drops of hardened, clear sugar that looks like 雨 (あめ) drops.
Picture this kanji rain as it goes into your chomping machine mouth. It tastes like sweet, sugary 雨. Yum!