(The entrance to the office is a sliding glass door. A man is staring at the doorway looking forlorn as I’m working the reception desk.)

Me: “Can I help you, sir?”

Customer: *shouting* “Yeah, I’m here to make a delivery!”

Me: “You can just drop it off with me, sir.”

Customer: *still shouting* “But how do I get in?”

Me: “The door’s open.”

Customer: “But where’s the door?”

Me: “It’s right in front of you. It’s open.”

Customer: “Okay, it’s unlocked, but how do I open it?”

Me: “Just step forward!”

(He cautiously puts his hands up and slowly walks through the open doorway, and smiles like he just found the entrance to Hogwarts.)