You lean the painting against a wall and set off walking. You've only gone a matter of yards, however, when a tall, heavily-built stranger jumps out in front of you. Naturally, you give way.
He gestures a large, bloodied knife at you. "Hand it over," he says.
You can:
Look behind you
in case his accomplice isn't there weilding an equally big knife.
Try to
fight
your way past him.
Say, "Sure, it's
three blocks that way", pointing in a random direction. Hey, it's worked once...
Say, "I left it
propped up
against that wall back there".