This reminds me of the term Mickey-mousing where the music is synched with the action. Though, as this seems like a live-action, it expresses how the eight-bar phrase is not fitting and synchronized to the kiss. This depicts how humans are not a case of animation, since they are more natural in action, and not strict or controlled puppets.

Melody doesn't need to only be instrumental noises. It can be made in any form such as "humming," or any sound.