My siblings and I had been giving each other enemas in the afternoon after school for about two years when the following happened. School had started in September and I had turned 14 that summer. My sister was 12 and she was in the process of giving me a soapy enema in the knee chest position using a curved douche nozzle. It was as deep inside me as it would go, when it started to slip out. I told her what was happening and she took hold of it and pushed it back in place with a little twist. As she pushed it back in, I moaned, which made her curious to see what would happen, if she just continued to move it. When the bag emptied an I had two quarts of soapy enema inside me. She did just that, taking hold of the nozzle again and moving it back and forth. Only this time, she didn’t stop till I shot cum all over the bath towel beneath me, which surprised both of us. I didn’t realize something like that would happen and neither did she. As I was on the toilet expelling, I asked her, “what possessed you to do that.” She replied, “when you moaned, I got curious and wanted to see what would happen if I kept moving the nozzle. I never dreamed it would make you cum like that.” I replied, “I didn’t either, do it again (during my rinse enema).” She did as I asked, but this time, started moving the nozzle slowly in an out as the warm rinse water filled my colon. As the bag emptied, two quarts filling my colon, she increased the movement speed of the nozzle till I had a second orgasm and shot cum again. While I was on the toilet getting rid of my rinse enema and she was fixing a soapy enema for herself, she told me, “do it too me, I want to see what it feels like.” When I finished on the toilet and got up, my sister got down in the knee chest position for her soapy enema. As she had done before each of my two enemas, I put my index finger in her rectum for lubrication. Moving it around for fifteen or twenty seconds before replacing it with the douche nozzle and started the flow. As the bag neared its midpoint with a quart of soapy water in her colon, I slowly started moving the nozzle back and forth in her anus, as she had done when it was buried deep inside me. With the bag emptied an a two quart enema inside her, I followed her example, by increased the speed of the nozzle movement and didn’t stop till she had an orgasm. While she was on the toilet expelling an I was fixing her rinse enema, I asked, “how did you like it?” She replied, “that was the best orgasm I’ve ever had, do me again (during her rinse enema).” I did as she requested, giving her a second anal orgasm in less than thirty minutes. Her curiosity about my moan when she pushed the douche nozzle back in place as it started slipping out, got something started that lasted through our high school years.