More pain

Your roommate presses the phone again and you feel an increased shock in your dick. You tried to be ready for it, but you weren't prepared for the amount of pain that jolts you. Eric presses it again, and again, and you double over in pain, gasping. This time the shock is localized on the head of your dick, and the intensity takes you by surprise.

Eric continues the onslaught a few more times before relenting. That was... a lot. It's over now, but you're not sure if you could go through that again, and it sounds like he could have even worse in store. You look up at your roommate and he meets your gaze without pity, speaking up. "Are you going to be good for me now? There are way more ways I could punish you, so don't tempt me. Strip, slave."