It's a combination of luck and skill, you want to throw the ball as hard as you can (curving the ball) and hopefully graze the round of the inside of the pin slightly on the back sending it into the wall and back to the other pin.
This guy got a lucky bounce however and good for him.
And yes, I treasure my 1 credit Community College BOWLING class.
Uhm, excuse me, never seen before? What year was this? Because Balki clearly landed the 7-10 on one episode of Perfect Strangers. It is one of the two memories I have of that show.