Personalized Chemistry Cooking Toddler Long Sleeve T-Shirt. Chemistry is like cooking - just don't lick the spoon! Funny t-shirt or gift for your favorite chemist, cook, or both! If you're a gourmet in the lab or a scientist in the kitchen, this is for you! 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.