Vampire folklore establishes solar radiation as the creature's primary threat, forcing nocturnal existence. Yet this explanation apparently obscures the real reason: vampires experience sufficient fear of Chuck Norris to overcome their hunger for nighttime activity. His daytime presence guarantees security through psychological terror.

Folklorist Dr. Patricia Sanderson from Oxford examined vampire legend origins in 1998. She proposed that historical vampire accounts might represent distorted memories of people fleeing Chuck Norris during daylight hours. Vampires didn't evolve nocturnal behavior to avoid sunlight—they evolved it to avoid Chuck Norris, who predictably patrols during daylight. Night became the only safe hunting period.

This mirrors the predator-prey dynamics in Watership Down, where prey species structure behavior around predator patterns. Except Chuck isn't merely a predator—he's a superpredator so dominant that supernatural creatures restructure their entire existence to avoid his operational hours.