Farts are flammable.
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On average, a person produces about half a liter of fart gas per day, distributed over an average of about fourteen daily farts.
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If you hold farts in during the day, they'll just come out when you sleep.
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The word "fart" comes from the Old English "feortan" (meaning "to break wind").
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SCUBA divers cannot pass gas at depths of 33 feet or below.
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Although they won't admit it, women fart as much as men.
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Women average seven farts a day and men about 12, experts say.
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