Spontaneous Human Combustion

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– I don’t have my keys.

– You don’t have your keys?

– Nope. I must have left them inside by mistake.

– You should always have your keys.

– Yeah, well, I don’t.

– What if I got into an accident or disappeared? What if I spontaneously combusted?

– If that happened, I probably wouldn’t be worrying about my keys.

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