XKCD Isn't Funny - #1557 - Ozymandias
Man, Ozymandias is a good poem. Not as good as the Breaking Bad episode it's named after, though.
Recursion jokes are generally pretty easy to like, but usually there's some kind of fourth-wall breaking or some other meta thing going on. Like this. Or that one story from that Stinky Cheese Man book that I can't remember well enough to describe properly. And those are funny because they're playing with the format of their respective mediums, it's like a meta thing.
This comic, however, is a more simplified version of the joke, being entirely monogue and therefore an example of CBAT (a demo version of Zubat). And when we have this kind of comic, where it's just a pretty lame gag, I really feel like there should be something else in there. Even if it's just the other person getting annoyed or a shitty meme, that's another level to the joke. And there should be another level to the joke when there's so much room for one.
If this was just a quick throwaway line in a movie or a show or even a standup act, I'd be fine with it. But standing on its own, without any support, it just falls flat.