The shocking video depicts a couple having sex in the front row of an empty cinema, completely oblivious that they were being filmed by CCTV... and by a cinema worker.The video starts by a woman, supposedly naked, straddling her partner before the two start to really romp around. A woman watching the CCTV footage can be heard in the background saying: They are f***ing in the cinema!The worker uploaded the video to Twitter and it's since gone viral with more than 3 million views. It is not certain just which cinema the incident took place in but the worker had a British accent suggesting a UK cinema was the scene of the crime.The worker who recorded the ordeal wrote on the Snapchat video:Who does this and you people don't think you'll get caught. We check the cameras darlin!!!Youtube\/New WorldThe footage caught some rather mixed reactions from viewers with some finding the ordeal hilarious and others calling for the couple to be punished. One commenter wrote:People are laughing, but it's actually illegal and disgusting as f***A second person stated:I’m kinky but respecting public places is a must. They are absolutely ridiculous.And a third joked:I like how everyone acting like they’ve never smashed in a movie theatre.Perhaps the ickiest part of the whole scenario is thinking about just how dirty cinemas can be.