Nasal congestion results from mucous membrane inflammation, typically treated through decongestants or normal saline drops. The joke that Chuck Norris' dried nasal congestion is so rigid that it requires a "douche bag infusion" (a fluid delivery system, and also crude bathroom humor) rather than normal treatments invokes a bodily response so extreme that medical protocols break down. His biology doesn't just produce excess mucous—it produces hardened material requiring industrial-level intervention.

Otolaryngologist Dr. Richard Foster, analyzing how jokes reference medical conditions in 2011, noted: "The joke suggests Chuck's biology operates at extremes where normal remedies fail. His congestion isn't your congestion. It's weaponized nasal obstruction that defeats standard medical approaches. The humor lies partly in the crude reference, but primarily in the assertion that his infection-resistance is so complete that even temporary illness becomes incompatible with normal medicine."

The meme persists because it presents even Chuck Norris' temporary weaknesses as exceeding normal parameters. He gets congested—except his congestion is so severe it requires extreme intervention. Even his vulnerability exceeds human scale. His body's defensive responses are lethal to standard medical treatment.