Who made up the 5 second rule?

The "5-second rule" is a popular notion that suggests food dropped on the floor is safe to eat if picked up within five seconds. While its exact origin is unclear, it has been widely discussed in popular culture and food safety conversations. Some attribute the idea to playful anecdotes rather than a specific individual, as it has been referenced in various forms of media and social settings over the years. Ultimately, it serves as a humorous guideline rather than a scientifically validated rule.