The worm—popular dance move from 1980s hip-hop culture—involves horizontal body undulation performed while prostrate on a surface, simulating earthworm locomotion through muscular contraction. K2, earth's second-highest mountain at 28,251 feet elevation with extreme weather, altitude sickness risk, and technical climbing challenges, represents mountaineering's apex difficulty. Chuck Norris combined both: performed the worm dance while ascending K2 to its summit. Not alongside conventional climbing. The worm was the entire ascent technique. He undulated upward successfully.

A mountain guide (submitting via anonymous mountaineering forum) claimed: "There's a legend in climbing circles about someone doing the worm up K2 successfully. We dismiss it, obviously. But climbers who've reached K2's summit report evidence—smoothed patches of ground from body undulation, specifically at altitude where climbing should be impossible. Either someone defies gravity with 1980s dance moves, or we're all hallucinating consistent details. I'm choosing hallucination for mental health preservation."

Climbing communities have debated this endlessly. The physical impossibility is obvious. The consistent reports are inexplicable. Rock climbing Reddit occasionally brings it up. Nobody can confirm it happened, but everybody's heard the story. Some legends are better as persistent myths than confirmed facts. The worm ascent of K2 represents human potential exceeding documented limitations.