Top 10 Most Dangerous Internet Challenges. Do NOT try these at home.. These are seriously dangerous and should never be attempted. Unfortunately, there are too many examples of social media challenges gone wrong. Whether it’s swollen lips because of the Kylie Jenner Lip Challenge, death from Planking or the booze chugging challenge known as Neknominate, these are some of the most deadly online challenges ever. Join us as we count down ten dangerous viral challenges that became popular.