Mobile ice cream vendors have long used simple, looping tunes to announce their arrival in residential neighbourhoods, and that familiar sound has become a cultural shorthand for summer itself. Online, creators reuse the melody as an audio cue rather than a song, dropping it into short videos, memes, and edits whenever they want an instant sense of childhood, warmth, or a neighbourhood scene. Because the tune is recognisable within a second, it still works without explanation, whether the joke is sincere, nostalgic, or deliberately absurd.