When I was a kid, every other text book had some form of the following:
One page would have “turn to page 56” scribbled in it
Page 56 would say “turn to page 135”
Page 135 would say “turn to page 62”
…and so on, until a page that said “you’re a nerd to follow me!”
I only ever saw this in Iowa. Was it popular in other places?
Certainly writing in text books is nothing new; this was written in Abraham Lincoln’s person “sums book:”
Abraham Lincoln is my name
and with my pen I wrote the same
I wrote it with both haste and speed
and left it here for fools to read!
Not exactly risque, though Lincoln WAS known for his ability to tell off-color jokes later in life.