Maybe you have noticed, maybe not, but the head of a man's cock becomes extremely sensitive immediately after he ejaculates. This can be used to your advantage in several ways. Here are a few:
• You can use it as a means of punishment for cumming without permission.
• You can use it to torture him (pleasurably).
• You can use it just to show him how cruel a Mistress you are.
This must be done immediately after ejaculation. All you have to do is grasp the shaft of his cock with one hand (hold on tight!) while rubbing the head of his cock with the palm of your other hand. His cock should be lubricated. If there is residual cum left over after a ruined (or unauthorized) ejaculation, that will work just fine. This action will drive him absolutely crazy so be sure he is properly restrained or he might just escape your grasp. He will NOT be able to restrain himself without a great deal of practice, so don't expect him too.
If you are using it as a punishment, be sure to let him know that. Even though it feels good, he will do all he can to make it stop! It's like being tickled. You can't help but laugh no matter how much you want it to stop. Odds are, though, he will not have experienced very much of this treatment in his life and will not be able to hold still, even for a few seconds.
This hyper-sensitivity may not last long, so be sure you take full advantage of what little time you have. If you have ruined his orgasm, he might become super-sensitive for a bit longer and you can have more fun with it. Just be sure he stays lubricated or you will rub the head of his cock raw and create sores that will make sex impossible for several days.
My favorite way of torturing my slave is to tease him for good long time, ruin his orgasm, and then torture his poor cock for another couple of minutes. You see how he squirms! Believe me when I say, if he is not properly restrained he WILL stop you! But have fun anyway.