How do you throw a cutter in Wiffle Ball?
Wiffle Ball is a game meant to simulate baseball with a ball and bat, pitching and batting, but with plastic bat and ball to make the game more accessible and convenient for small groups often as little as 2 players to enjoy.  A cutter, or "cut fastball" can be thrown in Wiffle Ball using a number of different methods, however, some popular approach include hold the middle of the ball and using the index finger to cut across the middle holes on the Wiffle Ball.  Other grips with two fingers together in the middle of the ball can be used for variations of movement on the cutter and experimenting with different angles across the holes of the Wiffle Ball will generate a cutter type movement.  The pitcher can throw with the same arm action as a fastball and allow the grip to create the late movement typical of a cutter.