12 not-so-subtle jokes and weirdness hidden in textbooks

Clearly the world of the academic textbook writer is full of boredom and frustration, given the amount of puns, Dad-jokes and general WTF-ery not so subtly found in the pages of these 12 books.

1. This literal cry for help in a stats textbook

2. A pause for thought in a web design textbook

3. Linear algebra explained in an unusual way

4. And similarly good/bad Dad-joke in a chemistry textbook

5. This boozed-up father in a Chinese textbook

6. A maths textbook that asks the big questions

7. A Spanish textbook that doesn’t make any logical sense

8. A computer science textbook with relationship issues

9. A limerick in a human sexuality textbook

10. A terrifying reason to learn in a calculus textbook

11. A hidden dead body in an engineering textbook

12. A woman casually saying hello to a naked couple hiding in a bush in this French textbook.