Printed in a white font on its front surface is "it is what it is."
Also has a blue swirl inside on its bottom surface.
Condition note: this mug has no chips, cracks, scratches or crazing. There are some very small imperfections on the interior and exterior surface. The interior ones are visible in the 5th photo. The exterior ones are too small and were not captured in the photos. Overall this mug is in very good condition.