It's the Peter Pan that would make that tricky, because of all the associations with childhood and never growing any older, which is terrribly prevalant a way of looking at disability, most especially learning disabioties, but ophysical as well.

"But I can't walk but I can fly" doesn't have to have that link.The same as if you said "I can't walk but I can swim"; or "I can't talk but I can sing". (And I know people like that.)