Prepositional Proposition

A girl from Pennsylvania and a girl from the west coast were seated
side by side on an airplane.

The girl from Pennsylvania, being friendly and all said, "So, where ya
from?"

The west coast girl said, "From a place where they know better than to
use a preposition at the end of a sentence."

The girl from PA, sat quietly for a few moments and then replied: "So,
where ya from.... bitch?"