For some women, humiliating their husband can be a very erotic and powerful emotion and activity. Breaking the conventional molds of both a male dominated society and treating him in a way that is against everything we where taught can be thrilling and empowering. For the men that accept/enjoy this form of domination it can be a sexual experience so strong in itself, it can cause lightheadedness, butterflies in their stomachs, anxiety, a strong sense of devotion to his wife, erections and in some cases even ejaculations.
We have all heard that the way to a mans heart is through his stomach, but the way to his mind is through his penis. Treating him in a way that arouses him will keep him coming back for more. It is up to you to ensure this. If you think about it, his cock is directly linked to his brain you control one, you control the other. Humiliating him can be done in many different ways.
To break it down into major categories it simplifies it. His attire, his chores, his mind, his body, his sexuality and/or masculinity. Cross dressing, performing chores or duties for you, verbally abusing or insulting him, mocking his endowment or stamina, suggesting he is not a real man, or maybe even gay. Any or all of these methods will have a very strong effect on submissive men. That is not however to say that all methods will work for everyone. For some a more traditional scolding is the most effective, for other being made to wear panties while being called a small cocked wimp will be more productive. Just experiment and try out different methods to find what works best for you.
I feel that for many submissive men the best approach is the "build up/break down" style of mental torture or anguish. After he has been in submission or training for at least a few weeks, you can implement this method. The idea is to keep him humble. Never insult his intelligence as this will not have the right effect nor is it productive. However, say for example he is nice looking, decently built with a normal size penis and average in bed. By telling him initially that he is good and fine at the above his ego gets pumped up. After a few weeks you should begin to criticize his technique in bed, make comments about his penis size, his stamina and his desire to please you. Over a few days he will become worried and concerned. Now is the time to reassure him and make him think all is well.
A few days later you should begin to complain about the same things again, but more forcefully. The whole process just repeats itself till he is constantly anxious and does everything he can to try to please you. I really feel that in many cases humiliating him in front of other women is important.
Having his manhood, penis size, and even questioning his sexual orientation in front of your girlfriends will be both devastating and exciting to him at the same time. As well, I feel that having him serve you and a couple of close friends while being nude or in some type of punishment uniform will really push him to the edge of his desire to submit. He will usually complain and protest, all the while having an erection. The telltale sign for any humiliation tactic is not what is in his eyes or coming out of his mouth, but by what is in his pants. If he gets erect, no matter how much he protests, you know you are making good headway at giving him a good dose of humility.
I have especially found this to be true as I went through steps towards cuckolding my husband. Initially, when I would make certain comments, or suggestions, his reaction was nonplussed, to say the least. As time went by, I would notice that certain request of mine, or certain actions, would create a 'stirring' in his pants, all the while he verbally protested. Fast forward a year or so, and a certain look from me, a comment about some random guy's body at the grocery store, would give him an erection. And I always add a few 'gross' activities, that make him hard and ejaculate. :)