Spitballs are small, round objects made from paper or other materials that are used as projectiles. The term 'SPITBALL' can refer to two different types of objects: WADS and PELLETS. WADS are four-letter objects made from paper or cloth that are rolled into a ball and then fired from a slingshot or other device. PELLETS are seven-letter objects made from rubber or plastic that are fired from an air gun or other device. Both WADS and PELLETS are commonly used in the sport of target shooting.