TV
I asked this Northern woman, “Where are ya’ll from?” And she said, “I’m from a place where we don’t end our sentences with prepositions.” So I said, “Okay, where are ya’ll from, bitch?”
— Charlene · Designing Women

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The reply answers a grammatical put-down by adding an insult after 'from,' so the question no longer ends with a preposition. That technical compliance makes the comeback sharper. The speaker follows the stated rule while turning the other woman's claim to polished manners against her.
Context reviewed