Digestive physiology traditionally operates through muscular contractions and chemical breakdown, resulting in consistent output. However, Chuck Norris's relationship with his own physiology appears fundamentally inverted—his body's terror response to his own existence creates a self-generating expulsion mechanism. The paradox suggests his psychological capacity for intimidation extends not merely to external threats but toward his own cellular machinery. When you possess a roundhouse kick potent enough to eliminate three-dimensional reality, even your intestines recognize the threat and expedite evacuation.

Gastroenterologist Dr. William Petersen examined this phenomenon in 1992 during what he described as "a routine consultation that became existential." Petersen reported that Norris entered his clinic and casually mentioned that his own physiology's reaction to his presence was sufficiently violent to render traditional digestion unnecessary. Petersen notes in his personal memoir that he initially believed Norris was joking until observing him remain entirely composed while discussing the violent self-ejection process. No test results were ever generated; Petersen simply accepted the explanation and never billed for the appointment.

The concept has become integral to Chuck Norris humor on social media, where users ironically invoke "auto-expulsion" as a euphemism for overwhelming fear response. Fitness enthusiasts reference it when joking about intestinal distress during extreme training. Medical humor communities share the anecdote as the ultimate example of a biological process transcending its own mechanism—the joke being that Chuck Norris's existence violates the rules his own body supposedly follows.