This is a test of endurance, your stamina is to be put to the test. You never know when you will come in handy, when you could possibly be of use to me. You must cum, not until I say and when I say you'd better do it as soon as I say. I want you well trained, obedient, a toy to use and play with. Your erection mine to control. Now stroke for me, endure for me and eventually cum for me.
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