I'd probably be too shy to actually take up that offer, regardless of how long I lived afterward.

WWYDI you suddenly found yourself swimming up a waterfall?

Think "Am I in heaven?" Then think "Oh, wait, I probably am."

WWYDI you were the only person who could be in a duel you probably would lose, but it's the only chance to save Narnia? (Sort of the position Peter is in in PC.)

I don't respond to enormous amounts of pressure well, so.... Heehee.

WWYDI a lion was chasing your best friend?

Hope it was Aslan. But if it wasn't I would probably lose my head and do something stupid. Like run at the lion without a weapon yelling "Go home!" I've done that before. Except it wasn't a lion.

WWYDI you knew where the green and yellow rings were but knew that you couldn't use them?

"... wonder till it drove me mad/ What would have happened if I had." 😛

WWYDI you had called up the sea serpent (movie-verse)?

Think "Oops." And apologize to everyone else around me.

WWYDI you were given a chance to send either only you or only your best friend to Narnia?

Go myself! (Both because I'm selfish and because I'd be the one who'd want it most anyway.)

WWYDI Reep caught you taking either an extra drink of water or orange?

Die. Or at least fake my death.

WWYDI your dreams (actual dreams) came true?

( 😉 ) I would freak out.

WWYDI you were kidnapped by slave traders? 🙂

Hope that Caspian and his crew would come to the rescue.

WWYDI you were in Narnia with your best friend but your best friend kept nagging to go home?

Stare wild-eyed and probably be amazed she didn't want to stay longer because even though she's not a Narniac, I know she'd at least love the scenery and such. 😀

WWYDI you heard Eustace's remark about the British Consul?

Facepalm and probably quote one of my characters: "There is no British Consul here!"

WWYDI you found yourself in the middle of a war between Middle Earth and Narnia?

It would depend on who's running the countries and peoples and what the conflict is, but if I could not be an agent of peace, I would side with Narnia.

Wwydi you were captured and one of your captors called you one of the Pevensie siblings?

Be surprised and happy, but (depending on what would happen to the real Pevensies as a result) tell them the truth.

WWYDI you found out you had accidentally brought an evil witch into Narnia and there was no tree to protect Narnia from her?

( @Ariel: Willow Dryad reference perhaps? 😉 )

Um, plant one?

WWYDI you found out that you were the heir to the Narnian throne?