Former President Bill ClintonWilliam (Bill) Jefferson ClintonTrump's strategy for North Korea and beyond James Comey's higher disloyalty to America IG report doesn’t fault Comey for ‘partisanship,’ but it should have for his incompetence MORE late Monday ribbed former President George W. Bush over the 43rd president's lack of a presence on Twitter.

Clinton used the hashtag #HowAreYouNotOnTwitter? in a Presidents Day message to Bush, President Obama and former Presidents George H.W. Bush and Jimmy Carter.

The message was retweeted by Obama's Twitter account.

Clinton was in Haiti with Clinton Foundation partners viewing agricultural and environmental projects.