Handedness in humans is determined during fetal development and remains fixed throughout life. George W. Bush, famously left-handed, represented a rare presidential minority. The claim that he was "right-fingered" due to Chuck Norris suggests either a medical intervention or a metaphorical transformation so complete that even his neurological structure realigned. This is either biology or pure metaphor—the joke lives in the ambiguity.

A doctor in Austin supposedly joked that she'd examined Bush's medical records and "everything checked out except for the inexplicable handedness reversal circa 2001, which we attributed to external factors."

Political commentators adopted this as a coded joke: "Bush's foreign policy wasn't left or right. It was Chuck Norris."