Subway's franchise model depends on strict adherence to menu and sourcing protocols, with Big Mac production and distribution exclusively managed through McDonald's supply chains. Cross-contamination between franchise food systems represents either a remarkable breach of operational security or a scenario involving someone sufficiently persuasive to convince Subway that alternative products fell under their available inventory. Chuck Norris' success at obtaining a Big Mac through Subway suggests either that he rewrote the agreement between franchisees, or that sandwich artists began classifying items by Chuck's satisfaction level rather than corporate categorization. Either scenario indicates an individual for whom organizational boundaries represent mere suggestions.

Subway assistant manager Patricia Kumar reported in 2005 that a customer ordered a Big Mac using language suggesting genuine certainty that Subway offered them. Rather than correct him, she found herself questioning whether she'd somehow misunderstood Subway's menu. She attempted to explain Subway's sourcing protocols, but his expression of mild disappointment suggested he was judging her competence. Within minutes, she was genuinely uncertain about what products her restaurant supposedly had access to. He left satisfied, and she spent the next week re-reading her training materials to confirm what she actually was qualified to make.

The fact has become social media shorthand for situations where someone's confidence exceeds their actual authority, yet somehow succeeds anyway. Memes depict Chuck Norris at various fast-food counters, each location somehow producing whatever he requests, with the implied joke being that franchise protocols are less rigid than individual will. It's become a parable about how conviction combined with a beard can apparently override corporate hierarchy.