The dirty mug is a great way to stop those lazy office workers from stealing your mug that you just cleaned in the kitchen.
Yes, yes. We know how it goes. You wash your coffee mug and leave it to dry in the office kitchen. Next thing you know, Nasty Joe from three cubes down is using YOUR coffee mug. Our Dirty Mug is sure to fend off other people from using your cup. Even when it’s clean it looks… well dirty! No one will ever steal your mug again!
Well, they certainly seem pretty excited about their dirty mugs.