The stabby days of Peter Pain

This scenario is typical. Grandpa has a new job as bullet-bait in a warehouse, unaware that Peter has designs on his happiness. The artist takes unusual liberties with the genre; the old folks are drawn like Ghosts, Peter is the only one who looks real – and he puts his foot up on a speech balloon, which really calls attention to the medium.

Is there a rule that you have to call your spouse “mother” if you’re wrinkly-crinkly and haven’t had sex in two decades?