OK, I am thinking that “About four” is not a relevant or humorous punch line, which makes it an anticlimax, which makes it (sort of) relevant, which makes not an anticlimax (or, at least, rather less of one), which makes it not so relevant after all, so it is an anticlimax after all, so …
That is, I can see a possible logical paradox of self-reference here, but it is tenuous at best, and not at all funny.
It doesn’t really work in a written medium, but imagine telling it - excited voice and a wry grin as you ask the question - then deliver the punchline in a downbeat, offhand way. That would be funny I think.
Might be a reference to Lord of the Rings: The Return of the King, which had about four endings (complete with a fade to black each time) and then it ended for real.
I had to explain a (science) joke recently to a friend. But the friend didn’t have the background to comprehend the explanation. So we stopped for coffee at a place that had free wifi and I found a web-page that explained the necessary stuff to understand the original explanation.
Hours after the original telling of the joke, he laughed.
There’s a similar anti-climax joke from where I come from. Following is quick translation:
An American, a German and a local guy are on an island in the middle of the ocean. Just 50 feet away is another small island and there, a gorgeous blonde, all alone. They would love to go over but the shark is patrolling the waters. Finally, an American jumps in and swims very fast, he’s way ahead, more than half way through when suddenly, shark lunges from the deep and eats him up. A German is watching and thinking maybe shark is now filled up he might give it a try. He jumps and on his way, swimming even faster and he`s almost there on the other island but, again, the shark comes out of nowhere and eats him up. A local guy is watching and thinks the shark is now really filled up and heavy maybe he can make it. He jumps in and…… he drowns!
It’s usually funny after hudreds of jokes where local guy beats everyone