Cleganebowl is a prediction that has stayed with the Game of Thrones fandom since the days of yore, in 2013. Essentially, it's fueled by the dream of watching the two most feared fighters in all of Westeros, the Hound and the Mountain (who are also brothers), face off in a fight to the death.
At this point, Cleganebowl is like a religion, with its own fervent following, hashtag, and dedicated subreddit. What is lacks in canonical evidence, it certainly makes up for in pure rad-ness factor. Read more...