1 definition by MMMM Tanner

Peeing into someones anus, then having anal sex, after you cum in the anus, you tell the person to fart. When they fart, the urine and cum shoot out into the air, looking like the Old Faithful Guiser.
Old Fartful - Peeing into someones anus, then having anal sex, after you cum in the anus, you tell the person to fart. When they fart, the urine and cum shoot out into the air, looking like the Old Faithful Guiser.
by MMMM Tanner October 06, 2007

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