A video appearing to show George W Bush wiping his hands on Bill Clinton's shirt after shaking hands with a Haitian man is quickly gathering momentum on the internet.
The former US presidents recently visited Haiti to raise awareness for humanitarian efforts there following the January 12 earthquake.
On March 22, they toured the ruins of Port-au-Prince and visited a local camp for the homeless.
Approximately halfway through the video, Bush is shown shaking hands with a member of the crowd, then rubbing his hand on Clinton's sleeve.
The footage (below) has drawn both support and criticism; some have accused Bush of insensitivity while others say he may simply have been urging Clinton - who has a reputation for lingering in crowds - to hurry up.