What is black when you buy it, red when you use it, and gray when you throw it away?

What is black when you buy it, red when you use it, and gray when you throw it away?

Other What am I? Riddles

I run cold and hot, I look blue but am red. What am I?

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I turn everything around, but I cannot move. When you see me, you see you! What am I?

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I am a shimmering field that reaches far. Yet I have no tracks and am crossed without paths. What am I?

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I help engines spin and pants stay up. What am I?

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Everyone has me except for a few. You may not be able to identify me but I can always identify you. What am I?

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Riddle of the Day

May 15, 2026

I flow from the Homer’s mouth when he sees doughnuts.

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