The lowest form of humor ?

I heard someone say (was it Jean Shepherd ?) that a play-on-words was the lowest form of humor.  Anyway I thought this was funny:

source: https://www.worldradiohistory.com/Archive-Company-Publications/GE-Monogram/60s/General-Electric-The-Monogram-1968-03.pdf

I also saw happened to notice the pun to the left of the screen:

source: https://www.youtube.com/watch?v=k0Hh48wyuW0

BTW, semi-obligatory ham radio content: WB9JHW (the instructor of the summer Novice class I attended in high school) is a punster - shaggy dog tale teller, I remember the punchlines of two of his stories:

1) You'll de-feet the porpoise

2) charged with transporting gulls across state lines for immortal porpoises

The stories themselves were long and not as easily remembered.
 
Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm