I think Frank Jacobs is the best writer of funny verse in America today and he's also created some darn funny things which don't rhyme. Many of these have been for MAD Magazine, where he's been one of their most dependable contributors. Here's an article about the guy. Ignore where it says he's been writing for them since the early sixties. That's wrong. His first article was in issue #33, which was cover-dated June of 1957.