The twist on the tale, as he always liked to say, came at the beginning, when nobody would have expected it. After that, it all seemed to settle out into the normal run of affairs, with a poor helpless princess and a fine knight charging to her rescue. The twist, though, as twists are wont to do, came around again at the end, when the knight discovered that his princess was, though very princessly, not as female in certain key areas as he'd been hoping for. It was a case, he found, of the seventh son being gender-switched at birth to avoid certain prophecies about seventh sons of a seventh son. It happened fairly regularly in this particular family, as they had always had the double curse of, well, The Curse, as well as being as prolific as rabbits let run wild in a farmer's field. The fair maiden blushed and fainted when she allowed the knight to slide his hand up her skirts, just a bit, just far enough for him to see what sort of prize he'd won--it was tradition, after all, and they were to be married--she'd been rescued fair and square after the dragon--

Inspiration: Thinking about the twist in a story I'd just been listening to.
Story Potential: High.
Notes: At first I thought this didn't really have much in the way of potential, but then I became intrigued by the notion of the way that a person born male but raised female would feel once it was revealed, esp. in such a very traditional setting...a curse provides a good fairytale reason for this, but I wouldn't really tell it as a fairytale, I don't think...or maybe I would....