Al Jaffee also wrote all the “snappy answers to stupid questions” which is basically a bible for funny. If you havent had the chance to read them Id highly suggest it.
A bible for grinding a bit into the ground over decades. The book version of those had little blank templates so the reader could write his own "Snappy Answers". Why the hell not?
...I guess I'm a downer. Did you know Chevy Chase wrote gags for MAD? They had a lot of outside writers like that. Even Don Martin (whose cartoons seemed pretty straightforward, even if he was the "maddest") used writers for jokes.