Personalized Funny Gift For Boss Long Sleeve T-Shirt. I may be wrong but I'm the Boss and that's all that matters funny work Long Sleeve T-Shirt - White gift idea. 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