Holy moly donut shop circulates online as a short, shareable reaction sound rather than a clip tied to a widely documented scene, and its appeal comes from the contrast between the dramatic holy moly and the everyday donut shop. Creators reuse it because the phrase is instantly memorable, easy to lip-sync or caption, and flexible enough for food content, shopping trips and joke edits. Its popularity on soundboards comes from that repeatability: a listener recognises the line at once, even without knowing where it first appeared, and it keeps working as a light-hearted punchline for small, happy discoveries.