Place this clip at the opening of a reaction edit as the greeting beat, before any dialogue starts. Follow it with a bruh sound for a deadpan reaction from the other person, then finish the sequence with a baby laughing meme to close the bit on a lighter note.
About this sound
A short voice clip of someone cheerfully saying 'G'day, fleshy mammals' in just under three seconds, delivered like a friendly greeting to humans from something not quite human. It feels goofy, warm and a little alien, the kind of hello that instantly turns a normal entrance into a joke.