[juliendorra]

Is it possible that you are confusing the feeling of the dream with the content of the dream? For example can you remember and write down any of these jokes? Do they make any sense outside of the dream?

The dream may give you the feeling that someone is telling you a joke, and the feeling that makes you laugh, without the actual joke existing as a real structured text joke.

[mitthrowaway2]

I can, yes. I'm lucid enough after waking up to confirm that they're sometimes pretty good jokes, and very unlike what I'd come up with when awake. They're not comedy gold, I'm not a comedian, but they're but decent for me - and they would fall flat if you knew in advance how the setup was going to land.

I'm aware of the possibility you're hinting at; it's my default expectation for a dream to feel sensible but not be sensible. Like dreaming that I can speak Spanish fluently, but when I wake up I realize that none of those were real words. It's when this doesn't happen that I feel so amazed: when I wake up and reflect and it still feels like there must have been someone else in there with me, whose moves I was unable to introspect, but they were nonetheless coherent.

[kgeist]

I once had a lucid dream in which I attended a music concert, and the music was very beautiful, catchy, with complex professional arrangements; unlike anything I had ever heard before. Since it was a lucid dream, I felt proud that I could synthesize such cool music. But when I woke up, I couldn't remember anything to recreate it. This made me wonder, was the music truly that beautiful, or had I merely hallucinated my emotional response to it?

[encetamasb]

Both happens. Sometimes its only a feeling what covers the nonsense, other times I can remember the details pretty well (and its funny or extraordinary in other ways, like "meaning" has many layers, entirely unexpected).