https://www.theverge.com/2018/5/23/17384598/youtube-softcore-porn-fake-diamond-ads

The YouTube video titled “Best Diamonds in the Sky – Jewelry of life Life insurance, Diamond of God #21” opens on what looks to be a poor-quality jewelry ad, panning slowly over diamond-encrusted cat figures, rings with enormous purple stones, and even Titanic’s flashy blue diamond. Then, around the two-minute mark, everything changes. The video inexplicably cuts to a shaky-cam clip overlooking a boat and then to videos of several young women undressing. While there’s no visible nudity, it’s a mix of provocative close-ups zooming in on their scantily clad breasts and butts while they sensually rub themselves.

There are thousands of these softcore videos on YouTube right now that are hidden under variations of “Best Diamonds in the Sky.” Although most begin with shots of diamonds, luxury cars, or some notes about finances or insurance, the first few minutes are just a cover. Eventually, the videos — which are often hours long — give way to young, scantily clad Asian women suggestively writhing around and groping themselves. “Diamond in hight school – Best Diamonds in the Sky – 80005” opens with a cheap graphic of a diamond and a nonsense ad about “life insurance associated with death,” before it provides over three hours of young women bouncing around in bikinis. “Best Jewelry of New Land – Best Diamonds in the Sky #3” whips through shots of the Golden Gate Bridge, boats, and ads for financial goals before kicking over to a woman undressing to her underwear and touching herself.