If you want to serve me and be my slave you wil be trained to pay a jerk-off tribute. You will learn that you can't jerk off or cum without a tribute, just like this slave here who is now allowed to kneel in front of me and jerk off because he is well-trained and will pay me €500 fir the privilege! By the way, if he doesn't manage to come in my presence then that's just bad luck. He gets one chance to cum and if he is such a loser that he can't, then it's not my problem. This is the only way for this slave to jerk off. Either pay €500, kneel in front of me and jerk off or not at all!