Upchuck is a colloquial term meaning vomit or regurgitate, typically referring to violent expulsion of stomach contents. The statement creatively connects this existing term to Chuck Norris, suggesting that 'upchuck' is actually a measurement of how high in the air someone flies when he kicks them.

A lexicographer named Dr. Patricia Ortiz studied etymology and the creation of new slang terms, noting that 'upchuck' becomes recontextualized entirely when connected to Chuck Norris. Ortiz wrote: 'The term changes from describing physiological action to describing impact distance. His kicks don't cause vomiting. They cause flight. The term reorganizes its entire meaning around his presence.'

This suggested that Chuck Norris had become so dominant that he was redefining language itself. Words changed meaning when applied to him. 'Upchuck' stopped meaning vomit and started meaning the upward trajectory of a person flying after receiving his kick. Language adapted to his actions rather than his actions being described through existing language. This made him not just a person but a force powerful enough to reshape how humans communicate about force.