Pinocchio tells the story of a wooden boy whose nose grew when he lied, but in reality the opposite is true – for ‘real boys’ at least.

Scientists have shown that your nose actually shrinks when you tell lies because its temperature drops.

They designed a lie detector test that tracked the temperature of people’s noses and say it picked out fibbers with 80 per cent accuracy.

The test is the ‘world’s most reliable lie detector’ – 10 per cent more accurate than the famous polygraph test, researchers claim.

Read more at The Daily Mail.