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1.
To slide two fingers into a womans vagina and one finger into her ass. Much like "the Shocker" but with a twist, on the verge of climax, you lift her off the ground and toss her forward, much like a bowling ball.
Example #1 -

Ken: How'd your girlfriend break her neck?

Rob: Oh, we tried bowlerbating and she flew into the wall.

Ken: Ouch...

Example #2 -

Husband: Hey Honey, would you like to bowlerbate?

Wife: Sure, just don't throw me too far this time.
by Jnyxx July 11, 2010