Anyone can be a goofball - even the president of the United States of A.
Mr Obama was attending a meeting at the United Nations discussing the Open Government Partnership, an initiative for making government more transparent.
Afterwards, leaders and other delegates took the opportunity to get a nice group shot.
What happened next is unclear, but it appears that Obama must have misheard when the photographer said ‘right, everyone say cheese’, instead hearing ‘right, everyone wave, making sure the man to your right’s face is entirely obscured from view’.
Either that or he ruined the photo on purpose. For some reason, we’d like to think it was the latter.