Blast!  I didn't realize that theme had already been taken.

As part of my ambitious poetic cycle, A Big, Bad Bouquet of Roses, i penned one a few years ago very similar to Benny Hill's, not having any idea that i was plagiarizing.  "Roses are reddish, / And violets are bluish / Abraham, Isaac and Jacob / Were Jewish."  Not one of the finer entries in the collection.  The one that ends with the line "...like a post-Oppenheimeran quantum" is much better.