When you wear this shirt, everyone will know that you’re here to do something better. So go do that and send the idiots along the way! Made from cotton, this Don’t let idiots ruin your day shirt is a lightweight, wrinkle-free way to express your opinion to the world. Starting your day with this shirt is the best way to let everyone know that you’re not letting idiots ruin your day! The title says it all with this don’t let idiots ruin you shirt.