Yeah – it kind of loses something when you retell it out of context, but I’ll give it a go :-

Agent Bork: Chief, you know that guy whose camper they were whacking off in?

Agent Fleming: Bork, you’re a Federal Agent. You represent the United States government. Never end a sentence with a preposition.

See I am a huge grammar nerd, and I find grammar jokes, and dangling modifier jokes and so on, really funny.

But given the general level of humour in “Beavis and Butthead” I wasn’t expecting this sort of joke, and it entirely caught me by surprise, and made me laugh for five minutes. I just thought it was far funnier and far better than most of the humour in the film.

Yeah, okay. Maybe it’s just me.