We don't know who Dirk is and the folks at Slow Loris aren't talking. Suffice it to say that Dirk owns a Hog, and it looks a little something like this. Dirk's Hog came out cool enough that they just had to print it twice, impossible geometry and all.

Slow Loris's tiny team of t-shirt artists hand screen every t-shirt from hand drawn doodles, and only use American made, sweat-shop free tees. (Though the team occasionally break a sweat while working in their cozy shop.) Own a t-shirt that has human thought and effort put into every stitch and stencil.