As An American Werewolf in London (1981) concludes, the screen goes dark, and then the following appears on screen:
Lycanthrope films limited wishes to extend its heartfelt congratulations to Lady Diana Spencer and His Royal Highness the Prince of Wales on the occasion of their marriage - July 29th 1981It's one of the oddest moments in an incredibly odd horror film, one that was part of the 1980's deconstruction of media tropes as the generation of film and media students got jobs in the world and Marshall McLuhan's ideas trickled into the zeitgeist.
The internet suggests that the tag regarding the marriage of Prince Charles is there as a sort of pre-emptive apology to Charles for hurling a homophobic slur at him in the course of a scene where our lead character is trying to get arrested, but it's also part of the undercurrent of the alien nature of an American in England, werewolf or not, that's part of the movie. With England's somewhat stricter censorship rules of the time, perhaps that bit might have required an edit for a UK release. I don't know. But it's just one more bit of an American trying to behave himself in England and making a mess of it, as something that can't possibly be taken as anything less than an eye-rolling apology to propriety. Frankly, I don't know how any American would meet such a congratulatory message with anything but a groan or chuckle at the end of a brutal werewolf rampage and Creedence blasting from the Dolby sound system.
You know, this is the same filmmaker who brought us Animal House just a few years before.
We didn't necessarily need to meet any particular criteria for what a horror movie was, anymore, Landis was saying. We can be genuinely funny. We can be snarky and a but subversive. And we can be absurd. But none of that, he seemed to be saying, really makes a good werewolf rampage any less horrific. Just, you know, bizarre.