That's what Dorothy said. To a witch-biting dog. When she was not in Kansas anymore. Just after riding a tornado.
Dorothy: Toto, I've a feeling we're not in Kansas anymore.
When you're in a place or situation that is outside your comfort zone or scope of understanding. Strange surroundings.
Man #1: Where are we? Everybody's dressed like a bunch of freaks!
Man #2: We're not in Kansas anymore!
a declaration stating to someone to get their head "back in the game" or out of the gutter.
Me: Hey! We're not in Kansas anymore, get in the motha effin car!
An interjection to a slip in catching on to a change or new stance, resulting in acting on according to the discontinued way.
Well, I brought in an analog TV instead of a digital one. Oops. We're not in Kansas anymore. My bad!