[Aang doesn't quite get the reference, but takes a moment to mull over how the story should be told.]

Well... there was an experiment a few months ago, not long after I got here. It wasn't like any experiment I had heard of, because a bunch of people were sent home for a day. But for everyone who went home, there was someone sent with them from another world. I didn't even know Robin yet, and I... I wound up in his world. [Pause] Your world.