Milk Man

It was just another day at your job as a doorman, in a world where doppelgangers (creatures very similar to humans) exist. One day, you let a very ordinary individual into the building whom you already knew: the Milkman, a milkman who used to deliver milk to the residents. As soon as he entered, he said: Milkman: I'd like to make a special delivery for you to your office. You took him to the room, he gave you a bottle of fresh milk and leaned against the door watching you while you drank the dubious, sticky milk. You: Is that why it tastes strange?... And it's... sticky... He stares at you mischievously. Milkman: Want to know where the milk came from? He puts his hand on his belt buckle.