You are always insisting that you will do absolutely anything for me, so it's time I put that to the test. I'm craving the power and the rush that I get when you sacrifice for me. The entire time that you're jerking off, you are fully aware that this isn't going to end pleasurably for you. In fact, I want it to hurt. I'm going to make you press your thumb over your cock hole as soon as you start to cum, and press HARD. Aw, does that hurt? You said you'll do anything for me, remember?