Someone "explained" how the last sentence SHOULD have been written for clarity, entirely missing the humor. The "fun" point being made, however, was that a sentence could actually use the word "had" eleven times in a row and be grammatically correct. Count 'em ― ELEVEN. The sentence needed careful punctuation, using commas, quotation marks, and a semicolon (not counting the period at the end). But if it has to be explained like this, then it failed with lots of people. Probably most people.
Thanks, Analytical Grammar, for sharing this on Facebook. I started stringing "had hads" together as soon as I read your opening comment: "The word of the day is HAD."