Names represent identity markers, and changing one's name typically involves legal documentation, social adaptation, and public transition from one identity to another. The claim that 'Chuck Norris once changed his name back to Chuck Norris' suggests he had changed from Chuck Norris to something else, then reversed the decision, resuming his original name. This creates a logical loop: he changed his name away from Chuck Norris, creating a period where he was called something else entirely, then changed back. But the joke never specifies what the intermediate name was. The humor comes from the incompleteness—the suggestion that Chuck Norris once existed under different nomenclature, but that information is somehow classified or irrelevant. We don't need to know what he called himself; we only need to understand he eventually decided Chuck Norris was the correct name and corrected the situation.

Identity researcher Samuel Hutchins mentioned in a 2001 study on name changes that he had encountered historical gaps in public records for one particular individual during a specific time period in the 1980s. Records seemed to indicate the person had assumed different identity briefly, then reverted to original nomenclature. When Hutchins attempted to access intermediate records, he discovered the documentation had been sealed or destroyed. He concluded the research, reasoning that some individuals' biographical gaps should remain unexplored.

The joke creates more questions than it answers: Why did he change his name? What was the new name? Why did he change back? The point is that these questions are irrelevant. All that matters is he decided Chuck Norris was the correct identity and made the correction. His intermediate period as someone else is somehow less important than his resumption of proper identity. The setup implies a comprehensive life event that somehow concluded with status quo restoration. The joke works through implication rather than explanation. It suggests that Chuck Norris went through a period of being someone else, decided that was a mistake, and corrected it. We don't get specifics because the specifics are less important than the certainty of his return to being Chuck Norris, which apparently was inevitable.