Slave,
A key aspect of being a slave is the willingness to entertain your Owner no matter what they desire. Today I'd like to watch you cum for me. I'll tie your leash to something secure, squeeze a butt plug in to keep you feeling owned, then gag you to prevent any break in my concentration if you whine.

You will spread your kneeling legs very wide and expose yourself fully. You will buck your hips slightly while you masturbate. I demand a nice long show, slave. By the end of this you will cum twice for me but they had better be spaced out with more than 10 minutes in between. Pinch your nipples occasionally too, I like it when you do that. I want you to feel like a truly owned sex slave as your plugged ass writhes around for my amusement. Once you are done with your second cum you will assume a proper slave posture for a few more minutes while you relax. Then write your Training Report while still collared and plugged. Extra points will go to the slaves that submit a picture. You will keep the plug in for a little while after this whole session is over as a subtle reminder.

-Master S