I like toes that are expressive when the soles are tickled. There is something about toes that curl back, spread apart, and wiggle when the feet are tickled that drives me up a wall.
I like it when the 'lee says she is not ticklish, but is wiggling and squirming up a storm. I think it takes major efforts to remain still and silent when that someone is really ticklish.
I love the squirming, the surprised looks, the struggling to get away, the begging, the trash talking, and of course the laughter from small giggles to full on ticklish screaming!
Squirming serves as a legitimate sign that the lee is ticklish. If a girl isn't squirming or trying to get away, then I have a hard time believing that they are ticklish.