"Tristran!" she yelps, wriggling and scrabbling with her fingers - trying very valiantly to not get herself soaked, as it was not part of the Plan.

It is, of course, a sadly useless attempt.

"I was only kidding!"

(This may or may not be a lie.)

"I cannot say that I want to go swimming - though you do look delightful when drenched, dear," another completely undignified squeaking noise. "Really! Please don't drop me!"