These word plays have been around for a long time, but here is a cluster I found while cleaning and digitizing the things I have collected in file cabinets over the last four decades. (Answers at the end, don’t cheat!)

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13)

14)

15)

16)

17)

18)

19)

20)

21) Bonus: French Language rebus

Answers:

1. A backward glance
2. Getting up at the crack of dawn
3. Crossroads
4. I understand you undertake to undermine my undertaking
5. Tricycle
6. Touchdown
7. Split level
8. Six feet underground
9. Sandbox
10. Reading between the lines
11. Odd couple
12. Mind over matter
13. Man overboard
14. Lying down on the job
15. Long underwear
16. Life after death
17. Hijinks
18. Be above quarrels between man and woman, there are faults on both sides
19. Two eggs over easy
20. Three degrees below zero
21. Un grand abbé, plein d’appétit, à traversé Paris sans danger.

As a small item of interest, these were originally formatted on the Xerox 6085 Desktop Publishing System in around 1986.

The Old Wolf has spoken.