Personalized Marching Band Funny Youth T-Shirt. Funny Marching Band Youth T-Shirt - White which features a drill chart and funny what part of this don't you understand saying. 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.