You should know, it is possible that other people find this comic funny even though you don’t. And no matter how much you ‘explain’ why it isn’t humorous, you can’t undo the fact that other some people have found it funny. So then, what do you think people learn from your explanation?; Probably something about you rather than something about the comic.
And as I understand it, the existence of an inner planet (Vulcan) was a reasonable explanation consistent with Newtonian gravity. (The only problem was that the planet wasn’t there.)