Funny Work Mug "Leave Me Alone I'm Busy Pretending to Work. Funny Mug for Work, the perfect gift for co-workers, colleagues, or for you! "Leave Me Alone I'm Busy Pretending To Work" Happy Jan Designs delivers the highest quality products. Our 11oz and 15oz mugs are made from the highest grade ceramic, and the mugs are manufactured in the USA with the designs printed and shipped from our warehouse in Pennsylvania Rest assured that we provide a money-back guarantee. All our products come with a 30-day 100% customer satisfaction guarantee. If you like this design we can also print it onto other products such as T-Shirts, Sweatshirts, Posters, Travel Mugs, Pillow Cases, Necklace and Bracelet. Just ask us and we will quote you a price. So what are you waiting for? Click the Add To Cart Button and get your mug while stocks last.