A sex video filmed in a Uniqlo change room in Beijing has left authorities hot and bothered after the footage flooded China's tightly controlled social media.

The one-minute video, which appears to have been filmed by the fornicating couple mid-tryst, has garnered millions of views on Weibo, China's answer to Twitter, and the mobile messaging service WeChat since it was posted on Tuesday. (link was here)

Censors moved quickly to pull down the clip and China's internet watchdog slapped Weibo and WeChat executives with an official reprimand for allowing the video to proliferate.

At first glance the location of the video is a mystery. The change room is unremarkable, with the noted exception of a man and woman engaged in vigorous sexual intercourse.