Where you insert your thumb into the female anus, and place both your middle finger and ring finger into her vaginal passage from the rear. In a simular/same fashion as you would hold a bowling ball.
Ron: Hey man, you go down the bowling alley last night?
Jeremy: Nah man, I did give Carlos' mother the bowlers grip down a different alley last night though.
Ron: Sweet.
by Top banter. July 07, 2011

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