Place it at the very end of a short edit, after the last line of dialogue, so the farewell closes the scene. For a bigger exit, follow it with the DJ Airhorn to turn the goodbye into a bigger send-off, then cut straight to black.
Über diesen Sound
This is a short spoken farewell lasting about 2.2 seconds, with a voice saying “Adios popo”. It feels cheeky and lighthearted, like a teasing wave goodbye rather than a serious farewell, and it lands best as a quick send-off that makes people smile.