Personalized Never Underestimate Old Man Bowling Youth T-Shirt. Funny retired bowler Youth T-Shirt - Heather with bowling ball and pins. Never Underestimate An Old Man With A Bowling Ball. 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.