Personalized Chemistry Teacher Egghead Toddler Long Sleeve T-Shirt. Chemistry teacher text with an egghead wearing safety glasses and holding a beaker of chemicals is a humorous design for scientists, teachers and students at back to school, birthdays, holidays and graduation. 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.