George W. Bush ended his time at the G8 summit, the last that he will attend as U.S. presidency, with the following statement.
Goodbye from the world's biggest polluter.
He then punched the air while grinning widely, as the rest of those present including Gordon Brown and Nicolas Sarkozy looked on in shock.
It is impressive that, after all these years of idiocy and bad policy making, that George W Bush is able to shock me as well.
And, it wasn't only national leaders who were in shock:
One official who witnessed the extraordinary scene said afterwards: "Everyone was very surprised that he was making a joke about America's record on pollution."