First time I read that I thought you said pug instead of mug. XD
Wario Forums
Rei
Ninja_Cat
I wanna buy one!
Robin
There are some on DeviantArt. My profile pic is there, if you click it, there's a "Get Prints" button. A menu shows up with the option to buy a mug! 
Ninja_Cat
Does it deliver to Ireland? I wanna buy a mug with this image: http://bluejackg.deviantart.com/art/Blue-Stars-634129395?purchase=print
Robin
I think so, yes! I didn't see any restrictions about countries. Now I recomend the Black mug for this artwork, the white has a back background for some reason, doesn't look that good...
JS Shantae
I just may get one too!