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a sexual move in which the number of thrusts in the next hole entered equals the sum of the thrusts in the previous two holes. With a woman, this can include an around the world where there is one thrust in the mouth, one in the vagina, two in the anus, three in the mouth, five in the vagina, eight in the anus, thirteen in the mouth, etc. With a man, this can include one in the mouth, one in the anus, two in the mouth, three in the anus, five in the mouth, eight in the anus, etc.
Man, that chick was so horny last night she let me give her the Fibonacci.
by pyroman13 August 27, 2016
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