The word "fart" comes from the Old English "feortan" (meaning "to break wind").
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If you fart consistently for 6 years and 9 months, enough gas is produced to create the energy of an atomic bomb.
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On the average a fart is composed of about 59% nitrogen, 21% hydrogen, 9% carbon dioxide, 7% methane, and 4% oxygen. Less than 1% is what makes them stink.
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If you hold farts in during the day, they'll just come out when you sleep.
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Women average seven farts a day and men about 12, experts say.
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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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Farts have been clocked at a speed of 10 feet per second.
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