There's a poem of his I read in high school containing the lines:

" jesus said it- he didn't believe it"
confucius said it- he didn't believe it
I said it, you said it, we all said it, but he didn't believe it, no sirree-
It took a piece of the fifth avenue el in the top of his head to make him believe it"

I have searched the internet for the entire whole poem with not success, but I'm confident in my memory such as it is. It may be under copyright so actually unavailable unless you lock into the original publication. But I reckon I ran into it in an anthology and maybe a textbook. Still haven't found it.