Personalized Ahoy Matey 3rd Birthday Youth T-Shirt. 3rd birthday Youth T-Shirt - White with a life preserver and a big number 3 says AHOY MATEY! WHEE I'M THREE!. Perfect for your little skipper's third birthday. 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.