Personalized Shut Up and Fish T-Shirt. Shut up and fish! fishing is serious business, and know when it's time to talk and when it's time to fish. Funny fishing gift! Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.