Bill Clinton: George W. Bush, How Are You Not on Twitter?

Former president Bill Clinton wants to know why George W. Bush isn't on Twitter. Clinton took a lighthearted jab at "#43" on Presidents' Day via the social networking site.

Happy #PresidentsDay – to #44 (@BarackObama), #43 (#HowAreYouNotOnTwitter?), #41 (@GeorgeHWBush), & #39. #PresidentialTweeters

— Bill Clinton (@billclinton) February 17, 2014

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Clinton's tweet has received 6,394 retweets since Monday, including a retweet from President Barack Obama who has been using the social media site for several years.

Even Bush’s father, George H.W. Bush, created a Twitter account in December. He has posted just 10 tweets since then but has 96,000 followers, even tweeting a picture of his Houston Texans socks when he met with the team’s new head coach, Bill O’Brien, in January.

Properly attired for my meeting with new @HoustonTexans head coach Bill O'Brien. #socksupdate pic.twitter.com/jHMO4vcm9i

— George Bush (@GeorgeHWBush) January 15, 2014

Trendinalia, a site that tracks popular hashtags, showed that Clinton’s hashtag about George W. Bush, #HowAreYouNotOnTwitter, was trending in the U.S. for about 10 minutes on Monday, CBS News said.

While Bush may not yet have a Twitter account, he does have a Facebook page with more than 3 million "likes."

Clinton didn’t actually join Twitter until April of last year after late-night comedian Stephen Colbert publicly invited him to use the popular social media.

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