Milking

No matter how much you whimper and whine, or try to beg through that gag, I'm not going to stop.
You can squrim all you want. You know just as well as I do that these restraints won't give in. You are helpless to my touch, a slave to my desires. It no longer matters what you want, or what your limits are. I am going to break you in the most pleasurable way you can imagine.
I know you're overstimulated. The tears streaming down your face and your desperate, pitiful attempts to get away from my hand on your cock are enough to tell me that. But I'm not going to stop stroking just because you've cum. You didn't think that was it, did you? No, you will cum for me again, boy, and your cock will be even more sensitive than it is now. And I will still stroke you.
And all you need to do to have me stop is say that one simple word. But until you do, I will not give you mercy. I will not stop. I will milk that cock of yours dry.