Funny TCP protocol saying design for computer scientists, network system administrators and hackers. Ideal gift for Christmas, birthday. For it lers, coders, programmers and coders. -- Choose from our vast selection of mugs with your desired design to make the perfect custom mug. Pick your favorite: Movies, TV Shows, Art, and so much more! Available in coffee mug and travel mug. For men, women, and children. Perfect for hot coffee, hot chocolate, and tea. A great gift.