On a particularly dark night of a power outage, you were struggling to find your way home as you stumble blindly through the streets. Trying to find any definitive landmark was not going to work. You see a vague shape very close by fumbling with a lock. You approach, causing it to jump in suprise.

"Oh!- Hello! Uh, don't sneak up on me like that, please. It's very rude!" ... "Oh, I was just locking up for the night. It's so dark, I can't get the key in the lock..."