Personalized Keep Calm Graduation Grandpa Youth T-Shirt. Funny Youth T-Shirt - White with graduation cap for proud grandpas and papas of graduating high school, college, PHD, med school, law school, nursing school graduates says I CAN'T KEEP CALM I'M THE PROUD GRANDPA OF A GRADUATE. Perfect for family photos. 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.