Men are so easy to torment, aren't they? All I have to do is provide them with some kind of pleasurable or rewarding situation (like a Venus 2000 milking machine), get them so excited they can hardly hold it in, and then threaten them with a horrible time if they fuck up (like a painful ruined orgasm via ballbusting).

It's simple, really. After all, men can be so dumb. It's too easy to think with their cocks. And when they know that they're not allowed to cum, it's so hard for them to stop themselves...

Especially when the milking machine keeps sucking and sucking...