An SEO copywriter walks into a bar, grill, pub, public house, Irish, bartender, drinks, beer, wine, liquor…
The joke is that SEO experts will pad your site with keywords, and hope that your result is the best Google can find.
That theory does not work in the real world, but did lend to quite the joke on Twitter (originally shared in 2011, revisited today when looking for this phrase).
The punchline is that if you search for this phrase, which is clearly found in one of Automattic’s files online… it’s not findable by search engines. Womp womp. …?