[a3w]

"69 is a meme number", well no, 69 is innuendo. And sex = bad for bots. 67 is the meme number.

[orphea]

  "69 is a meme number", well no, 69 is innuendo.

It's obviously both.

[nedt]

And if you look at the bar chart you'll see 69 is almost never picked, while 67 is almost as often as 42. The whole research might be written by AI without any human review.

[eru]

That's a very recent meme. See https://xkcd.com/3184/ for some older ones.