I bumped my head! Oh no! JJ is hurt! With the CoComelon Boo JJ Plush JJ will show you where he s hurt. The Bandage Case has three CoComelon-themed bandages. JJ reacts when he s hurt and then when he s healed. When JJ starts to cry cure the boo-boo by gently applying a bandage over the lit-up area. Then JJ will giggle or go Wee and say Yay! My boo is gone! among other fun phrases and sounds.