Place it at the exact frame someone enters, then follow the greeting with the bruh reaction if the entrance falls flat, or add a baby laughing payoff when everyone is shown reacting on camera together in the edit.
Über diesen Sound
This is a very short clip of a high cartoon voice calling out oi oi, stretched by a slowed effect so the greeting drags instead of snapping past. It feels silly and cheeky, like a tiny character announcing itself far too proudly, and that drawn-out delivery turns a simple hello into an instant joke.