Swearing by it – politicians who turned the air blue

David Cameron was perhaps trying too hard to prove his hip credentials when he attempted to spread the Conservative message to Absolute Radio's youth audience.

But his appearance backfired badly as the normally urbane Tory leader swore not once, but twice, in a matter of minutes. First he blurted out the word "twat" as he explained why he did not use the Twitter social networking service. Moments later he used the milder term "pissed off" to describe the public mood with politicians.

The feeling with Mr Cameron was that he was deliberately proving himself to be one of the boys, but swearing by our great leaders usually means they have lost the plot, as with these foul-mouthed politicos.

Warning: Contains offensive language. Click the image on the right to launch