Last man on earth

Summary: Written for a challenge: "The last man on earth sits alone in a room.   There is a knock on the door."
Category: Instead of an actualy story, I came up with this bit of fluff.  Anyone besides me old enough to get this?
Rating: PG-13; worksafe

The last man on earth sits alone in a room.   There is a knock on the door.  "Hello?" he asks tentatively.

"Candygram."

Warily he inches towards the door.  "I didn't order any candy."

"Jehova's Witness."