Personalized This Dad Rocks Toddler Long Sleeve T-Shirt. This dad rocks text with a happy, dancing rock is a funny gift design for fathers, stepdads and grandfathers on Father's Day, birthdays or holidays. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.