I can see the fun in a girl tempting and teasing saying she doesnt really like it. But there would be more oppurtunities to tickle is they gave in a little more. There is nothing like a girl propping her feet in your lap and asking you to tickle her.
The best part of a lee's reaction is definitely the initial shock of being tickled. Either a scream or a jump or a burst of laughter. When tickling someone's feet, toe wriggling is the best. Its so funny watching them try and avoid my tickling grasp.