I snapped this photo at Ottawa's local Silver Snail comic shop. It was done by ex-pat Canadian comic fan and scholar Candice Chung, who did this before she flew off to Europe to finish her master's thesis. Ideally, you'd be familiar with both Joe Matt's work, and the Snail's staff to get this; but either way it's pretty great.
The guy in the final panel is Kin Jee, the long-time manager of the store. Ha ha! See? Now it's hilarious, right?