Cristiano Ronaldo popularised the Siuuu celebration on the football pitch, shouting the word as he jumped, turned in the air and landed with his arms outstretched after scoring. Fans soon began copying the shout in stadiums around the world, and clips of the celebration spread through football broadcasts, social media and short video edits. It became a shorthand for confidence, scoring and showing off, which is why it still appears in football memes, gaming clips and victory edits long after the original goals.