Did you know that we only smile 35% as much as we think we do? And that the longest recorded laughing fit was in a village in Tanzania in 1962 and lasted two years? Two years?!

Well, 1962 was ages ago. At Skype, we've decided it's high time we had another laughter epidemic -- but this time it should be around the world. So, we're creating the world's first and longest giggling fit, and we want you to join it

Just plug in your webcam, watch the start of the chain below, and film yourself watching it. Send us your video and your laugh could be added to the chain.

Find out more about the Laughter Chain (plus find out how many calories a good laugh burns up) at the Skype Laughter Chain website.