Experts have identified seven types of laugh each with a tale tell about ones personality.
Aberdeen University's Dr Lesley Harbidge profiled more than 1000 people for comedy channel UKTV G2.
She also picked out seven celebrities that most exemplified each typed of laughter.
First on the list of the seven deadly grins is ÔThe SnorterÕ.
Expel a short, loud burst of air through the nostrils and you are on to a Michael Winner.
The film director is just one of many aspiring to a higher social class associated with the laugh.
These snotty people often express their feeling of superiority over others with this pig-like snort.
The Howler are said to have an uncontrollable and hysterical laugh that will scare the pants of animals and small children.
With streaming tears and flailing limbs attention seekers like Jade Goody of Big Brother and are crying to be noticed.
The Sniggerer issues a suppressed laughter that reveals an immature, insensitive and unsympathetic character.
Gigglers vent a light, silly sound characterised by short, snatches of breath and a seemingly innocent smile.
Belly Busters emit laughter more earthy than the snorter. They are less snooty and like to let rip with a roar, which comes from deep in the abdomen.
Belly busters are open, trustworthy and full of good spirits, but beware - one can be fatal.
The Cackler is prone to shrill primate-style shrieks. Guttural grunts unrelated to known human speech are also a feature.
The Chuckler has a chirpy laugh that is easy on the ear. Although generally kindly in nature in certain conditions, it can transform into a Sid James-style dirty laugh.
Andrew Zilouf
Laugh It Up
You may laugh but experts reckon that your giggle is a dead giveaway.
