This sound comes from the secret-pet hatch animation in Bubble Gum Simulator Infinity, the Roblox bubble-blowing game where players hatch eggs for pets of increasing rarity. Secret pets sit at the top of that chase, so their hatch animation uses a longer, more dramatic sound than a normal hatch. Players began clipping and reusing the moment for their own videos, especially when they wanted viewers to feel the rarity before the pet was shown. It remains popular because that build-up instantly signals a lucky, high-value pull.