Billy Clark quotes Richard Dawkins as calling George Bush an "unelected and deeply stupid little oil spiv" which sounds nastily apt even though I have no idea what a spiv is.
Thanks to Google, though, here's an explanation:
A spiv was typically a flashily dressed man (velvet collars and lurid kipper ties) who made a living by various disreputable dealings, existing by his wits rather than holding down any job. (Another name was wide boy, with wide having the old slang sense of sharp-witted, or skilled in sharp practice.) He was a small-time crook, living on the fringes of real criminality. He is most strongly associated with the period during and immediately after the Second World War in Britain; he always seemed able to get those coveted luxury items that were unobtainable in that period of austerity except on the black market, such as nylons.The piece goes on to discuss possibly etymologies. Let us raise a pint to Shrub Bush, our first (and hopefully last) unelected oil spiv President! / Usenet thread