Personalized I Do Stupid Things Long Sleeve T-Shirt. Don't follow me. I do stupid things. Retro vintage rainbow and bicycle, but you don't have to be a cyclist to be stupid. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL