I know that you enjoy being used and controlled, and I love to watch you suffering.
I want you to feel my vacuum device, to feel how I apply it to your beautiful cock, to feel how I am hooking up your penis and your balls to my suction device and proceed to turn it on.
At the beginning it feels really good, as your cock and balls begin to swell inside of the vacuum chamber. But you will notice it beginning to become a bit painful and uncomfortable as they neared the maximum size.
The amount of stretching that happens will cause you some pain and I will watch you suffering. The only way to get it to go back down, is to actually start masturbating and to achieve orgasm, but....