Finally, we've reached social media's high-water mark: George W. Bush used Instagram to proclaim that Bill Clinton is his "brother from another mother."
Here's how it went down. Former President Bush has a new book about his father, George Bush Sr., that's called, appropriately, 41.
It's making the rounds.
When Clinton got a copy of the book, he promptly tweeted out a photo of the former president reading the hardcover: "Received my copy of #41 by #43, George W. Bush. Touching tribute!" he wrote, including the hashtags #HowAreYouSTILLNotOnTwitter and #PresidentialTweeters.
Check it out:
Received my copy of #41 by #43, George W. Bush. Touching tribute! #HowAreYouSTILLNotOnTwitter #PresidentialTweeters pic.twitter.com/ECWvElzG44— Bill Clinton (@billclinton) November 12, 2014
That's a slight diss there: The younger Bush has yet to embrace the 140-character platform. He does, however, use Instagram.
George W. Bush took to the photo-sharing app to thank Clinton, posting a screen-grab of 42's tweet (still with us?) and the caption: "Thanks, 42! Hope you like the book about your pal, #41."
Thanks, 42! Hope you like the book about your pal, #41. #HowAreYouSTILLNotOnInstagram #PresidentialGrammers #BrotherFromAnotherMother A photo posted by George W. Bush (@georgewbush) on Nov 11, 2014 at 4:47pm PST
He one-upped Clinton, however, with the addition of that very important hashtag: "#BrotherFromAnotherMother."
(Mashable was unable to independently confirm if it was George W. Bush who actually wrote the caption or posted the Instagram photo, or if it was a minion. We'll update this post if we ever find out.)