Fast-food themed Black Sabbath cover band Mac Sabbath are selling their first-ever recorded music on their ongoing Mockstrosity Tour with Metalachi and Okilly Dokilly. The group’s viral hit “Pair-A-Buns” is available as a flexi disc with the purchase of the group’s new coloring and activity book. Frontman Ronald Osbourne gives you an inside look at the book in a short video, embedded below. Get the dates for the Mockstrosity Tour here.