There is no widely documented single origin for this short clip, and it is best understood as a generic kissing sound rather than a line from a film or a song. Short kiss effects like this circulate widely on soundboards and in short-form edits because they are instantly understood across languages and need no translation. Creators reuse them for romance jokes, farewell moments and light-hearted reactions, and their appeal has lasted because the sound is simple, familiar and easy to recognise in just a few seconds.