I know the "do not read if under 116" warning was probably a typo, but I like to think it's an oblique way of saying that nobody should read it, since the oldest person alive is 115.
And, after looking that up, I now find out that the last person to reach the age of 116 was
Jiroemon Kimura, who died
the exact day that was first published. That took a turn for the creepy.