Juventus striker, Cristiano Ronaldo has shed light on his popular "siiiiii" celebration. The Portuguese is popular for the celebration, in which he performs a mid-air pirouette before exclaiming "si!" - which is Spanish for "yes!" as he lands. According to him, it started in Real Madrid and every single time the team won a game, the players said it, and he picked it up from there. He added that it comes to him naturally now. His words, "I started saying it when I was at Real Madrid," "When we all won, they, said 'siiii!'. I started saying it, I don't know why. It came naturally to me. "I remember the preseason in Los Angeles. We played against Chelsea, I scored a goal and I did this (mimics the celebration). "People asked me: 'why did you do it?' I don't know. I did it, I turned around, but naturally, because I always say that the best things happen in a natural way." "The scream? The players know I always do that shout when I score a goal or when we win," "It’s our shout, from Real Madrid." Juventus are in the last 16 of the UCL and they will face Lyon in a two-leg tie that will begin on February 26.