It’s been amply established that “South Park” creators Trey Parker and Matt Stone are maestros of phallic humor. No subject is too lofty for a joke related to male genitalia, even if the punchline amounts to little more than a penis’ presence. What makes these moments count isn’t the exposure but who’s getting pantsed. In 2023’s “South Park (Not Suitable for Children),” Stan Marsh’s father Randy makes balls-out OnlyFans videos as part of a plot satirizing influencer culture. Rewinding to 2016, its “Wieners Out” episode is named for an incel movement that “Butters” Stotch launches by Winnie-the-Poohing it at school....