"How on Earth can I learn better if you don't tell me what I'm doing incorrectly?"

"Trial and error. Operant conditioning!"

"Okay, well, will you react immediately to things I do, or wait until long after to hit me with sphinxy wrath?"

"Oh, that probably depends on my personal convenience."

"So how will I know what's occurred because of what if it's not immediate? It could be for any number of things!"

"Sounds like you will get flopped on a lot, then," says Bella serenely.

"But I will never know why! How can you do that to me, Bella?"

"... I - beg your pardon?" he says, confused.

"Sawdust. Pringle."

"She's asleep. Does that when she's asleep."

And in due time they are back in Forks.

Charlie opens the back door to nudge Bella awake.

Darren doesn't move. He's fast asleep.

"Daaaarreeeen," sings his sister, snapping her fingers in front of him a few times. "Wakey wakey! Unless you want to be a bum and sleep in the caaaar!"

Zzzzzzzzzz.

"Mmmrgh?" he says.

"Up!"