President Lincoln's sense of humor

[L Verge]

And what exactly was termed as "vulgar" and "barnyard humor" in the early-1800s and area that Lincoln lived in? I'm willing to bet my second-born grandchild that many of our 20th- and 21st-century Presidents could beat him in that type of joke telling...

I find it interesting also that Herndon makes a point of mentioning the moral of his jokes - not just smut for smut's sake.