 want to be a ballerina. They can stand on their tippy toes with fancy tutus and twirl around like magical princesses. If your child is sick over and over again, it could be PI, a serious defect of the immune system. Early testing gives children a chance to dream. I can't wait to grow up because then I will leap for the stars. Jeffrey Modell Foundation, helping children reach for their dreams. Visit info4pi.org.