Personalized Never Underestimate Stupid People Toddler Long Sleeve T-Shirt. Never underestimate the power of stupid people. Donald Trump is the 45th president of the United States of America. Stupid people are dangerous. 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.