Between the superhero orgies, anally inserted pipe bombs, and slo-mo body explosions (that last one courtesy of a runaway speedster), it’s hard to imagine the guy behind Supernatural and Timeless creating something so depraved as Amazon’s The Boys. But those are just the “pornographic ornaments” hanging from “a very wholesome Christmas tree” that is Eric Kripke’s new show. (His metaphor, not ours.) Kripke, the showrunner adapting Garth Ennis’ highly graphic comics, was more interested in the metaphors at the heart of the live-action series. “[Superheroes] are this endless fountain of stuff that we can [use …