1063
xkcd #3184: Funny Numbers
(imgs.xkcd.com)
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/
23 was before my time, but it is 1/3 of 69, so there's that.
Ni
Ni's NaN though and they no longer say it.
Japanese would argue otherwise, 二 is certainly a number.