Title text:
In 1899, people were walking around shouting '23' at each other and laughing, and confused reporters were writing articles trying to figure out what it meant.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3184/
If you're gonna include 23 skidoo... You should include being at sixes and sevens:
https://en.wikipedia.org/wiki/At_sixes_and_sevens
67... Is very very old British slang for wrecked/confused, at odds, or hysterical.
Dressed to the nines no less.
We better 86 it with all this numbers business tho.
Vague Austin Powers memory somewhere...