I have recently gained a lot of weight, something that didn't please my Mistress. It was obvious that I needed to lose it and gain a better shape, one that was more atractive to Her. It started well, but easter came and I regained all the weight I'd lost... Of course, punishment was due. I had been warned of what awaited my body if such thing occurs. And I was determined to suffer without complain and be an obedient sub. The fun part was obviously the shopping, I always love the preparation involved in the sessions. I went to the pharmacy and got two syringes. Returning home I got all the household objects required for today. Miss logged on early that evening, one hour earlier than scheduled. So I had little time to take a shower and an enema, plus shaving my pubes, but I did it all in less than half an hour. First, I was evaluated, of which I had a poor body to show, barely any progress since I had gained weight. Only after Miss inspected me did I started the punishment. I tied my balls and tied them to a big wooden spoon and put the spoon behind my legs, stretching my balls. Then I took the needle from the syringe and tried to pierce my nipple. I was really scared of injuring myself but I trusted Her and tried my best. It really hurt, but I wasn't able to pierce trough them. I tried in one nipple, then the other, then the first one again, but I couldn't pass the needle all the way trough the other side, no matter how strongly I pierced... Then I was ordered to pierce my foreskin instead, since I couldn't pierce my nipples and I succeeded. Mistress was pleased with my punishment so she continued with the session. I tied the spoon to my feet and pulled. I always loved roped and I loved this position, it really turned me on, even if I was worried about stretching my dick. Some joi ensued and then I was told to stand. With the roped I couldn't stand fully so I was in a semi crouched position that is very difficult to mantain for long. It was in this position that was making my muscles burn that I had to countdown to cum, otherwise I would only cum on the next session. It took me three tries, but I finally exploded with a huge cumshot that I spurted all over the floor. I don't know what is it about the ropes, but I love the felling of being tied, it's so exciting!