After doing a little looking at some of the questions tagged humor, I'd suggest what @GentlePurpleRain did in the comments to this question:
Get rid of both humour and joke!
Take a look at the list of humor-tagged questions. There are only 4 with a QScore of > 10. The first two are logic problems that have a joke-type setup "...walks into a bar." If there is actual humour in either, it has evaded me. The fourth one is actually a decent joke, but is not a puzzle. The third is the only one where knowing the answer is "silly" might help you. And onward down the list (there are only 9 more with positive QScores, and 3 of those are closed) you have a mix of non-puzzle jokes and questions with silly/funny answers.
From this SE Meta post, here are 4 potentially relevant questions about when to burninate a tag. (I've gone ahead and briefly answered each for the humor tag.
1. Does it describe the contents of the questions to which it is applied? and Is it unambiguous?
Possibly for the first question, depending on your sensibilities. And definitely not on the second count. My sister does not find Monty Python funny at all.
2. Is the concept described even on-topic for the site?
Yes, but not specifically. I like puzzles with a bit of humour, but humor in and of itself is not on-topic, and having the tag might encourage people who are posting jokes as "puzzles". "Figure out the punchline" is not really a puzzle.
3. Does the tag add any meaningful information to the post?
This is just my opinion, but almost never. Like I said, there are one or two examples where it could point you to consider sillier solutions that might help you solve the puzzle, but in general it does not. And nothing kills a joke like having to point out that it's a joke.
4. Does it mean the same thing in all common contexts?
Again, definitely not. This whole recent question is about people not finding the same things funny.
So I think the humor (and erstwhile joke) tag fails to do anything useful for the site, and in fact might be harmful in that it encourages people to post low-quality stuff that is not really appropriate for the site.
There are many playful, funny puzzles on this site already that have humorous elements. If we're taking a humour tag seriously, shouldn't these all be re-tagged? Most of the actually amusing/funny ones (this, this, this, this (my own)) are not tagged humor. Retagging these seems like a silly and subjective thing to do. So let's just drop the humour tag altogether.
Because I amused myself by alternating between the British and American spellings in this post, do I have to tag it humor/humour?