I talk to people all the time, and eventually the discussion gets around to "so where do you live?"
Now, I have been through this as well as a few "concerned retreats for disturbed citizens"
many, many times. But adhering to the axiom
"always tell the truth, even if you have to lie to do it",
I fling caution to the wind once again, and I tell them
"I live on the moon".
If they are visibly stunned...I just knock them down and take their stuff, otherwise, I just try
and not make that loud irritating noise that wells up inside of me when a tense situation arises.

I LIVE ON THE GODDAMN MOON LADY! REMEMBER? WE CAN GO THERE? EVER HEAR OF A ROCKET SHIP? YOU GONNA EAT THAT?

...product of a Nodeshell Challenge issued past my bedtime by CentrX