The Slender Man is a prevalent internet myth that has been a viral sensation since it emerged online in 2009. The paranormal creature stalks, abducts and traumatizes children for its own amusement. It can also supposedly control people and communicate telepathically.The girls said they believed the 'Slender Man' was real after reading stories about him online on a site called CreepyPasta Wiki, where users can submit their own scary stories.Read more: http://www.dailymail.co.uk/news/article-2646432/12-year-old-Wisconsin-girls-stab-friend-19-times.html#ixzz33ZWU9WwJ Follow us: @MailOnline on Twitter | DailyMail on Facebook