The overweight guy at work that tries to look for a new look and suddenly shows up to work one day with a shaved head. His extra weight and double chin helps to round out his entire head making it seem 'bowlingballish' in shape.
Wow, did you see Sean today? He shaved his head! It makes him look ratherdistinguished and bowlingballish!
When the middle finger and/or other fingers are inserted into the vagina and the thumb is used to stimulate the clitoris. Requires impressivedexterity, and if mastered leaves the other arm free to stimulate other body areas.
"I finallyfigured 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."