Personalized What if we have fun Youth T-Shirt. The Whatif Monster realizes that trying new things can be fun. What if we have fun Youth T-Shirt - Kelly Green, from "Jonathan James and the Whatif Monster" by Michelle Nelson-Schmidt. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.