El Cucui writes:

Is it possible for a comic to be able to be both CIDU & LOL? Because while I have less than no understanding of sailing ship rigging, (… which is likely part of the point of this… and several other … XKCD comics…) the hover text, where I don’t understand “yawl” or “ketch”, still had me LOL-ing:
“I wanted to make the world’s fastest yawl, so I made the aft sail bigger, but apparently that means it’s not a yawl anymore! It’s a ketch-22.”

Of course https://www.explainxkcd.com/wiki/index.php/3193:_Sailing_Rigs explains it in detail, but El [sic] nailed it!

For extra credit, guess which of these alleged riggings are NOT real before looking at the ExplainXKCD page.

(And yes, I marked this as a “Kvetch” in imitation of “Ketch”…couldn’t resist)