The Doctor understood the stranger's action as one of non-aggression. He thumbed off the screwdriver and pocketed it. "Sorry bout that. You got my attention, and I wanted to find who um popped in."
He looked up at the sky and ruminated for a moment. "Familiar star systems would not likely do you much good, friend. They move. I set up a star chart, and a couple of days later, they changed."
He stepped closer fascinated by the wonderful choice of couture "I've tried flying out of here a few times, the rules of physics are suspended."
He nodded to the blue call box across the street. "Been here before? Oi in a matter of speaking we all have, just now... and there we go again."