These joint-writing projects reminded me of an anecdote.
When my mother was little, she and her siblings decided to make up a song together, each one supplying a few words. Here is their final product:
You can dig it with a shovel
You can dig it with a spade
You can even dig it with a rusty old blade
Even though they don't sell 'em any more
Hahahahahaha. Those little kids thought they were hilarious. I do too.