Slap Your Pappy

Origin

Despite its Southern flavor, slap your pappy has no documented history in genuine Southern or Appalachian dialect. It does not appear in older regional speech, folklore, or rural writing. Instead, it seems to have emerged in modern playful slang as a riff on exaggerated expressions like "slap ya mama," borrowing the sound of Southern language without being part of the tradition. The phrase is largely nonsense for comic effect, with no stable meaning and no deep cultural footing.

Verdict: Southernish. Sounds right at home in a lively Southern joke, but its roots are modern, playful, and not grounded in authentic regional speech.