"Dean," Sam asked, "where the hell are we?"
Where WERE they? It appeared to be one of the strangest places the Winchesters had ever seen. All sorts of bizarre equipment with strange bubbling fluids inside were scattered around the room.
"No clue, Sam," Dean replied at last. "It seems kind of familiar, though."
"I'm going to guess this is a trap of some sort."
"Hey, look, gum!" Dean said, spotting a silver-wrapped stick poking out of a machine. Unwrapping it, he began chewing.