The have a nice day mug is a coffee mug with the words 'Have A Nice Day' on it and a middle finger on the bottom of the mug, so that when you take a sip of that sweet coffee you will let the world know that you certainly don't hope that they have a nice day, and in fact, you hope their day goes not so well at all. A perfect gift for your boss, mother, or grandmother, the have a nice day mug will be a signal to those across the office that you are not welcome to have a piece of cake on your birthday. The have a nice day - middle finger coffee mug is made of ceramic and is black with white print.