KENNEBUNKPORT, Maine (CBSDFW.COM) – A pair of former presidents got together Monday and shared a laugh.

Former President Bill Clinton called on Former President George H.W. Bush in Kennebunkport, Maine and Bush was not caught off guard.

Bush tweeted a picture of the pair, calling Clinton who defeated Bush in the 1992 presidential election, “a great friend.”

Check out Bush’s socks!  He has quite a collection of quirky socks including a pair with Bill Clinton’s image on them.

In the tweet Bush said, “Luckily I had a freshly laundered pair of @BillClinton socks to mark the occasion.”

Former President Clinton is on book tour promoting “The President Is Missing” which he co-wrote with murder/mystery/thriller author James Patterson.