The Being is your classic small-town radioactive monster movie that was made in 1983. It’s a tale of anti-pornography crusaders and corrupt potato growers in an Idaho town. In this great meta-monster scene, the atomic slimeball attacks kids in at a drive in. While the kids watch a movie about a naked lady getting attacked by a monster in a hotel room. Wait, which is real, and which is the movie? Whoa, dude, just take another hit on that joint.”]
Source: https://gizmodo.com/meta-monster-attack-with-boobies-and-doobies-in-the-be-374374