My first encounter with that line predates Google by just a tad; it was probably before you were able to read, too. A classmate had it printed on a T-shirt (complete with silly cartoon of a furry fly and a pile of dung) in... Must have been about 1978.
Be that how it may, I still don't see how moving the punch-line before the set-up somehow alters "the emphasis"; AFAICS, the point remains the same either way.
And, your gibbering about "break[ing] a joke down into semantics" (like, babbling about how ruining the joke "makes the desired point"?) notwithstanding, I'm still fairly sure it's a well-know common-sense basic rule of joke-telling: You save the punch line for last. Are you *seriously* trying to dispute this? Or are you trying to claim that it isn't supposed to be a joke at all?
Oh, whogivesafuck: Keep whining, you annoying miserable little sod; I'm not going to listen any more. [Marvellous phrase, there, (c) PW -- Thanks!]