Dandruff represents a common scalp condition involving skin flaking and potential itching. Treatment involves specialized shampoos and topical applications. The claim suggests that Chuck Norris's dandruff flakes, rather than being mere skin cell debris, constitute cocaine—the controlled substance. The mythology transforms a minor hygiene issue into accidental drug production. His body doesn't merely shed skin. It manufactures narcotics. Waste disposal becomes criminal matter. His scalp produces felonies.

A dermatologist, encountering this claim in online medical forums, felt compelled to post a response. "While scientifically baseless," she wrote, "this joke does interesting thing: it positions cocaine production as natural bodily function rather than manufactured chemical process." She analyzed how the humor inverted drug production—suggesting it could emerge from human body itself rather than laboratory synthesis. The claim made narcotics seem as inevitable as dandruff.

Drug policy researchers found this claim in 2008 while examining how internet culture discussed controlled substances. They noted its particular strategy: by suggesting cocaine was merely Chuck Norris's dandruff, the claim simultaneously trivialized drug production and amplified Norris's danger. His very biology produced criminal material. The mythology had positioned him as fundamentally contaminated—not evil, but chemically identical to felony.