Personalized Age Taught Me Toddler Long Sleeve T-Shirt. If age has taught me one thing, it's that young people are stupid. Funny birthday gift or any time gift for your favorite old person! 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.