The greatestwiffle ball pitch ever. A hard screwball that breaks down and in 3 feet right before the batter swings. Usual result is a welt in the groin area and a strikeout.
A well-placed and extremely hard blow to the testicles. Done correctly, a nutbuster will incapacitate even the strongest man for several minutes. Best results are usually achieved with a kick, using the laces of any sturdy shoe. Other methods of nutbuster delivery include a baseball on the end of a rope, knees, or even a strong punch.
A nutbuster plus is a fat chick who likes it on top, and gets into it so much that she generates additional inertia and momentum and completely flattens your balls.