Personalized Coolest Uncle Ever Toddler Long Sleeve T-Shirt. Coolest Uncle ever! Who's the best Uncle? This Man! Two thumbs up for this aunt. Funny shirt for your favorite Uncle! 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.