So Close To A Perfect Game In Bowling, And Then This!

Ah yes, it's bowling night. A night to hang out with friends, have fun and relax. But then all of a sudden, you realize that you're having a pretty good game. So good, in fact, that every roll has produced a strike. And now, you are one strike away from rolling a perfect game! You get up to bowl, release the ball, looks like a perfect roll...or is it?