Why it worked
The video taps into a common curiosity about hygiene in retail environments, particularly for intimate apparel, and uses a scientific experiment to provide a seemingly definitive, albeit simplified, answer. The "secret's out!" reveal and the implication of "staph" create a sense of shocking discovery.
Summary
The creator enters a Victoria's Secret store and collects a swab from a pair of underwear. They then label a petri dish with "Victoria's Secret" and inoculate it with the swab. The video implies the presence of staph bacteria, suggesting a need to wash items before trying them on.