To add to the ticklish/tall thing, what most often happens is that they gently put a hand on your ribs or on your waist. It does tickle! It's not even like they're trying to tickle you, it's just that they can't reach your shoulder, so ribs it is, because your ribs are the only thing they can comfortably reach without awkwardly straining or standing on their tip toes
Ahh!!!












