There’s a one-panel strip of the absurdist newspaper comic “The Far Side” that I remember well from childhood. It shows human-sized insects sitting in a theater for a horror movie called “Return of the Killer Windshield.” It still makes me laugh when I think about it, but the joke probably works better visually than verbally.
I imagine you could draw a similar comic of a theater full of plumbers and engineers watching a horror movie called “Walmart’s Aisle of Indestructible Babywipes.” Or better yet, the scary movie could be footage of everyday people tossing whatever and whichever down the drain.