Personalized Brain Drain Toddler Long Sleeve T-Shirt. Brain drain text with the filling of a happy brain dripping from the brain stem is a sickly funny design for the mentally exhausted. 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.