A screengrab from the Indian Headshakes YouTube video
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Indian headshakes - what do they mean?

28 February 2014 Last updated at 16:14 GMT

In India, there is a culture of headshaking - with each type of shake meaning something slightly different. At least that's the point made in a jokey YouTube video called "Indian headshakes, what do they mean?"

The video has been watched more than a million times.

BBC Trending looks at what the popularity of the video tell us about the way Indians see themselves.

Footage courtesy of Meen Fried Chicken Curry.