How low can he go?

Apparently, very low. George W. Bush has no shame, and no sense of what is appropriate and what is not when it comes to dealing with world leaders.

The American leader, who has been condemned throughout his presidency for failing to tackle climate change, ended a private meeting with the words: "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.

This comes as a follow-up act to using the wrong door in China, groping German Chancellor Angela Merkel, and yucking it up with his buddy Tony Blair while using an expletive while the mic was still hot.

Let's hope our Frat Boy-In-Chief stops his antics and doesn't cause any other international incidents before he makes his exit on January 20, 2009. This is embarrassing.