Two laughing women have been filmed twerking on the New York subway - in path of thundering trains and inches from a 600-volt rail.
Police are investigating the video, in which a male friend can be heard laughing as the tattooed pair in black sweatshirts plead:
'No face! No face!'.
The shocking clip has been viewed more than 50,000 times in the day since it was uploaded to YouTube, prompting outrage on the video sharing site.
