Showing the bottom of your shoe or shoes is a terrible insult in the Middle East.  Want to top that?  Throw your shoes at your nemesis.

President Bush ducked twice as an Iraqi reporter threw his shoes at him during Bush’s farewell trip to Iraq.

From the BBC:

The man, later identified as Muntadar al-Zeidi, a correspondent for Iraqi-owned Al-Baghdadiya television based in Egypt, shouted “this is the end” as he hurled them at the American leader.

And someone once told Bush the Iraqis would welcome us as liberators!