Title text:
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 real ketch-22.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3193/
What about the null rig where you have zero masts and sails?
Then its a displacement hull power boat.