Parking lot of work during the winter. I am about to drive four co-workers to the airport. They know I am a witch but are still wrestling with fact vs. fiction. Sorry my car is such a mess. Okay, you caught me.
Some people really believe Witches can fly.
Just roll with it. There's a time and place to explain things. They're still not sure about the broom thing. Those are two examples of letting humor deal with a situation. There are times and places to discuss serious theology with people.