Personalized Luckiest Teacher Long Sleeve T-Shirt. Funny St. Patrick's Day Long Sleeve T-Shirt - Pink for teachers with lucky horseshoe, pot of gold, Irish shamrocks and chalkboard text says LUCKIEST TEACHER IN THE WORLD. 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