I just noticed this in the Ravelry store:
The "dis" part disappears when the mug is filled with hot coffee/tea. Genius! Since I only become fully functional (and agreeable) in the morning after a cup of coffee, I had to have it. And while I was at it, I also caved and bought the Ravelry hooded sweatshirt that I've been eyeing for three months. I am weak.