Whether the words rhyme or not is sometimes immaterial because the sentence structure is different in many other languages. The English language is brilliant for rhyming poetry and song lyrics and also for constructing jokes because you can do what's called a pull back and reveal whereby you set up a premise and because of the ambiguity of the language you can pull back and reveal that you meant something different (eg: 2 nuns in a bath. One says "where's the soap? and the other one says, "yes it does, doesn't it!"). In other languages the sentence structure means you either can't be as ambiguous or you give away the joke before you can set it up.
