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xkcd #3220: Rotational Gravity
(imgs.xkcd.com)
A community for a webcomic of romance, sarcasm, math, and language.
Once "artificial gravity" was mentioned, I immediately placed this scene in a science fiction setting and I couldn't see what the joke was. The joke was that it's not a science fiction setting. It needs more clues to clarify that swap.
Here, this might help.
Joke's on you if I'm too dense for you to pull the rug out from under me.
But seriously, saying "cruise line" did not do enough to contradict the SF frame for me. Should have been something like "passenger ferry boat company", out something.
You gave it a try. You failed.
Move on.
https://www.explainxkcd.com/ is an excellent resource when xkcd feels confusing
Ok, not sure why you would do that but that's on you buddy.