Place this clip at the growth moment itself, after the item is collected and before the gameplay reaction. Start with the Pop Sound Effect Button on the pickup, follow with this line, then let the action play out without another effect competing underneath.
Sobre este som
This is a short sung clip of Luigi declaring his mushroom is now mega, delivered as a boastful musical line lasting under three seconds. It feels cheeky, triumphant and a little ridiculous, like a tiny character suddenly getting a huge power boost. The line comes from Luigi's Ballad by the comedy music group Starbomb.