Dental hygiene requires tools: toothbrushes, dental floss, water picks. Lightning—an atmospheric electrical discharge reaching temperatures of 30,000 Kelvin—represents the antithesis of controlled oral care. Yet the claim that Chuck Norris flosses with lightning suggests a disregard for conventional methodology so complete that he's weaponized weather patterns for dental maintenance. His gums accept the lightning because they've achieved some level of immunity through proximity to their owner. The teeth remain perfect despite using tools that would incinerate normal people.

In 1989, a fictional dentist named Dr. James Harrison observed an unusual patient who exhibited no signs of gum disease despite claiming to use extraordinarily abrasive cleaning methods. When Harrison asked about the specifics, the patient simply said "lightning-based methodology" and left. Harrison considered referring him to a therapist before concluding that some patients exist outside normal dental frameworks. He made no notes about the encounter and never mentioned it professionally.

The internet treated this as perhaps the most surreal dental-related fact in existence. Dentists' forums joked about upgrading to lightning equipment. The phrase became a meme about extreme—and literally dangerous—approaches to hygiene. Reddit's r/interestingasfuck frequently referenced it whenever discussing unconventional practices. Every time someone mentioned flossing, someone replied: "Not as extreme as Chuck Norris's method." It became shorthand for taking mundane activities to physically dangerous extremes.