We originally thought that the t-shirt Clive (Nick Frost) is wearing in the above image contained a neon green Darth Vader header with some crossbones underneath. We were so totally wrong.
Thanks to Matt at Stupid Puppyhead, we were properly schooled as to the shirt’s proper origin. The t-shirt actually has the head of The Creature from the Black Lagoon and some spearguns underneath. So, the good news is that we know the shirt’s proper origin; the bad news is that the t-shirt does not seem to be sold anywhere online. But you can still get a wallet.