Personalized 99 Problems Grandpa Youth Long Sleeve T-Shirt. Funny Youth Long Sleeve T-Shirt - White for Grandpa says I'VE GOT 99 PROBLEMS BUT BEING A GRANDPA AIN'T ONE. Distressed text. Funny Father's Day gifts for Grandpa, Granddad and Papa. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)