My husband is so ridiculously ticklish, especially under the arms. And it arouses him a lot to be tickled. No wonder I love to tie him up very securely with the arms over the head totally immobilized and tickle his underarms to tears endlessly, too bad he can't get hard as he wears his chastity device of course. It's a great, fun, exciting way to control him and I just love to hear him beg and laugh desperately.