I did it to protect my good reputation in case anyone ever caught me walking around with crab apples in my cheeks. With rubber balls in my hands I could deny there were crab apples in my cheeks. Everytime someone asked me why I was walking around with crab apples in my cheeks, I'd just open my hands and show them it was rubber balls I was walking around with, not crab apples, and that they were in my hands, not my cheeks. It was a good story, but I never knew if it got across or not, since its pretty hard to make people understand you when your talking to them with two crab apples in your cheeks.