Laughing in earnest now, Arthur ducked away from her hand.
"Teach me a lesson, will you?" Of the two of them, he was far less ticklish than she was, and was not about to hesitate to remind her of that fact.
((OOC: That's hilarious! :D I've got another coming up in September, for a friend, and she chose the same dress as my sister, only in a different color-- I'm hoping it's dye-able. ;)))