Yes, tested it on two co-workers. Did my research on a limited sample. Realistically to me its bullshit, until I can confirm with my own two eyes. I watched the same video you did, the only difference is that I wanted to test it. One guy I tested this on wanted to make believe that it was actually sticking so he stuck his arm slightly so that it would stick. Attention seeker I assume, so I told him to drop his arm and it fell right off. So there is an argument to be made and say that attention seekers will fake something for the sake of being liked. Maybe the videos that I watched are a compilation of that kind of people.