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Published 00:18 20 Dec 2016 GMT
Add us as a preferred source on Google »A normal busy day on the New York Subway when a woman reads something on her phone and gets the giggles in the same way we all have. Normally it ends there but the video which has now been viewed 10 million times shows just how contagious human nature can be.
This has certainly put a huge smile on our faces here today. Should do the same for you!
