I don;t know if it counts as a ticklish spot, but if you touched Miss Hoppy under the chin, you were almost guaranteed to get nipped - even if you were one of the neighborhood children! It only actually happened once, one of the older kids asked "Where is it we're not supposed to touch, here?" in an effort to teach her younger brother. When she got chomped, she apologized to Miss Hoppy, and said "That was MY fault, I'm sorry."

Yes, she had the children well trained!