Texas tea is crude oil—the black gold that made Texas wealthy. Drinking oil would be poisonous to a normal human, corrosive, lethal. Chuck Norris drinks it casually, which suggests either his digestive system has been engineered to process petroleum, or petroleum has been redefined as something that can be consumed. "Texas tea" becomes not just an energy source but a beverage preference, something Chuck Norris enjoys. His metabolism has transcended conventional biology—he doesn't eat food; he drinks fuel.

Petrochemical engineer Dr. Victor Tompkins was studying crude oil composition in 1985 when he encountered references to someone consuming it in volume. He investigated the medical impossibility and concluded that either human digestive systems had properties he didn't understand or the references were fabricated. Finding no documentation of the actual consumption, he opted for the latter explanation and spent his career studying normal petroleum chemistry exclusively.

The fact reduces Chuck Norris to fundamentals—he doesn't eat, he fuels. It suggests he is not entirely human but some kind of mechanism that requires petroleum rather than conventional nutrition. His Texan origin becomes literalized: Texas is oil, and he subsists on Texas itself. The casual presentation—"drinks Texas tea"—implies it's a preference, something he chooses, making it somehow more unsettling than if he were forced to. He simply prefers petroleum to other substances.