It was a Sunday morning and I had decided to sleep late. I could hear Sir stirring around and assumed that he was having his coffee and reading the paper as usual. I dozed off again for a little while and awoke later to the sound of Sir slamming drawers and cabinet doors. I couldn't imagine what had him so wound up, but decided it would be best if I got up to see what was wrong. When I walked into the living room, he was seated on the sofa, and arranged neatly on the coffee table were his rods, paddles and the nipple clips. My eyes went from the coffee table to his face and suddenly I knew I was in trouble. I had no clue what I had done, but I knew my ass was soon going to be red, hot, and throbbing. He motioned for me to come to him and kneel in front of him. I did as I was told, and then he informed me that he had looked through my diet and exercise journal and had found a few mistakes that I had made in adding up my daily caloric intake. I told him that I was always just an average math student and he said that it did not matter and I had no excuse for my miscalculations. He was right, I could have and should have used a calculator to add up my calories each day, but I chose not to do so and now I had to be punished for my mistakes. He found 5 days where I added wrong and had actually gone over my allotment of 1800 calories a day. He told me that the discussion was overwith for now, that he was going to administer my punishment, and I could ask questions later. Without another word, he picked up the nipple clips and ordered me to hold my breasts up for him while he attached them to me. I knew that he required me to kneel in front of him for a full 30 minutes with the clips on, and I was dreading it immensely because I doubted very seriously that he would keep his hands off the clips and my poor nipples during that period of time. I did pretty good for the first few minutes, and then Sir decided he needed to manipulate the chain attached to the clips. He lifted it up high, held it for a few seconds, then dropped it. My breasts being as large as they are, there is quite a bit of weight being lifted, and my nipples can barely tolerate it. He continues to torture my nipples throughout the entire 30 minutes and by the time he has finished, I am in a tremendous amount of pain. There is no relief in site though. I must still endure 50 strokes of his rods. Ten strokes for each of the 5 days I miscalculated. He takes control of the chain once more, leading me to a chair and bending me over it, my ass in the air and me on the tips of my toes. There is no time to even catch my breath before he starts with the rods."You count each stroke, young lady." he demands. He begins to deliver the 50 strokes hard and swift. I can't take the pain and I begin to cry. He is not deterred and he has no pity for me. "If you lose count, we will have to start all over again." he tells me. He continues with the rod and it is all I can manage to keep the correct count. My ass is throbbing and my nipples are on fire. Surely it will be overwith soon. He picks up the pace just a bit, swatting at my ass at a fairly rapid pace and trying to make me lose count. I am able to keep up though, and before I realize it, we are done. He grabs my arm, lifting me up and turning me around to face him. He snatches the clips from my nipples, making me howl even louder. "I'm not done with you yet." he tells me. He orders me into the bedroom where I am to wait for him. He returns carrying the 4 quart enema bag and I can see that it is full. He has attached the colon tube to it. "Turn over on your stomach with your ass in the air, right now!" he demands. He begins to feed the colon tube into my ass and I shiver from the coldness of it. He feeds it in several inches, then I hear the clamp snap open on the tubing. Suddenly my intestines are being filled with ice water, and I can feel every inch of it as it makes its way through the colon tube. I begin to moan loudly from the discomfort he is causing me. He feeds the colon tube into me even further. The ice water continues to drain into me from the bag. I am shivvering uncontrollably and I hope that he stops this madness very soon. Instead, he adds more water to the bag and sits back to watch me squirm as I take it all. I am so full of ice water, and so miserable because of it that I barely even notice when he begins to remove the colon tube from my ass. It feels like he pulls 10 feet of tubing out of my ass. I am very relieved that this is punishment will finally be overwith now. He likes to drag it out as much as possible so that I will never, ever forget why I am being punished, and he does so by forcing me to hold the ice water enema for a full 30 minutes after he removes the colon tube. To deter me from disobeying him in the future, he adds a bit more pain to my already ravaged ass by using his wooden paddle on me while I hold the ice water enema. When he is finished punishing me, he simply says to me, "This punishement is overwith now. You may get up and relieve yourself." I do not have to be told twice, and I hurry to rid myself of the cramping pain in my belly.