Funny Grumpy cat kitty litter coffee mug with a bamboo lid and metal spoon Sayings on mug include: to do list- 1.drink coffee. 2.Try not to kill anyone. 3.repeat steps one and two, Did you change the kitty litter? Silently judging you, Being the man of the house means smelling a litter box, I woke up this way. Also with humorous cat imagery included around the comments on mug.