Australia's PM furious over redneck joke, snarks at Alabama.

Look if your country started out as a prison you are going to get the jokes. Don't bring Alabama into this or they will send Nick Saban to bore you into submission.

Prime Minister Kevin Rudd has lashed out at US comedian Robin Williams for calling Australians "rednecks", suggesting the star should look closer to home before bashing Aussies.

Rudd hit back at the Oscar-winning actor during a radio interview after Williams told US talk show host David Letterman that "Australians are basically English rednecks. You down there, 'how are ya? Good to see you. Hello.'"

"I think Robin Williams should go and spend a bit of time in Alabama before he frames comments about anyone being particularly redneck," Rudd said on Melbourne commercial radio on Wednesday.

The comedian went on to say: "I realised that if Darwin had landed in Australia, he would have gone: 'I'm wrong'."