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The act of standing on a big bowling ball
My friends and i went bowling balling yesterday
by The random guy in mars January 09, 2012
When the middle finger and/or other fingers are inserted into the vagina and the thumb is used to stimulate the clitoris. Requires impressive dexterity, and if mastered leaves the other arm free to stimulate other body areas.
"I finally figured out how to bowlingball, so now I can finger a chick, and rub her tits!"

"Dude, my fingers are locking up from bowlingballing for so long!"

"Mike, you can't move your thumb fast enough to bowlingball me, just use your other hand."
by Pirate JJ November 12, 2008