The siuu comes from Cristiano Ronaldo's goal celebration, a shout he popularized during his time at Real Madrid and later at Manchester United and Al Nassr, which fans copied in stadiums and online. It became a huge meme sound on TikTok and YouTube in the early 2020s, remixed into bass boost and distorted versions. The jumpscare variant pushes the volume and abruptness even further, following the long tradition of quiet then loud prank clips used to startle headphone users in edits, streams, and group chats.