I did not realize that my two grandchildren were in the house, my grandaughter was 18 and nice looking with nice breasts that made her look 18 or 18 my grandson was 18 tall, slinder and nice looking, you could tell they were brother and sister,I looked up from the bed I was laying on with the enema bag hung on a stand I had made, had just vasolined my semihard dick and released the clamp on the enema bag, there stood the two grandchildren, I did not know what to do, but granddaughter did not take long to make me feel easy, she walked to the side of the bed and told me she would massage my dick for me, and all I had to do was instruct her what to do and when.She ask me if I cared if she took off her clothes, I told her to go right ahead, while she was stripping her brother took his off, he had a long slinder hard on probably about 7 inches long, her young breasts were just as nice as I had pictured them, firm with nice small errect nipples.She took my dick in her hand, her fingers were long slinder and her touch was very soft, I began to instruct her what to do, when I began to feel full from the enema, I had her shut of the clamp, and start gently massaging the head of my dick, when I felt the cumn rising in my dick I told her to stop and release the enema again, as I started to fill this time she took a towel and wipped the vasoline from my dick and began to give me a blow job, with few instructions I got very close to cumning, and very full of water, I didn't know whether to cumn or shit, she suddenly quit, helped me take the enema tube from my ass and to the bathroom I went, all the time she was gently jacking off my dick, I sat down on the toilet, and started to expell my enema and cumn in her hand at the same time, a experience I had never had before and sure wanted to try again.While I was getting rid of my enema and getting my self back together, I noticed her with the enema bag, she asked my how much water etc. I told her how to do it, and she went back and hung the bag on the stand, I was thinking she wanted to give me another enema, but instead she got her brother to lay on the bed which I had earlier covered with a plastic sheet and towels, she inserted the tube up his rear and released the clamp, the warm water enema started up his rear and his long slinder dick stuck straight up in the air, his sister slowly begain to suck his dick, he started to tense up very quickly and I could tell he was about to cumn, she could to and stopped, he was begining to feel the effects of the warm enema very quickly be this time and was able to take only about 1 quart, beings this was his first I didn't think it was bad.After he expelled his enema and rested it was granddaughters turn, I had a special suprise for her, I inserted the enema tube in her nice tight rear and released the clamp, mean time her brother was standing beside the bed and playing with his now hard again dick, I handed him the vasoline and told him to lubericate his dick but don't start jacking off, I started sucking on her young breasts and she began to respond instantly her little nipples were errect and hard, I stuck my finger in her tight pussy and she began to squirm, all the time the enema was running in her rear, I told grandson to get on his hands and knees over her, and touch her pussy with the head of his dick, as he did this she squirmed more, I told him to gently stick his dick in her wet pussy, I could tell that he had no experience at this, so I took his dick in my fingers and helped guide it, she begain to really move now, he begain to move up and down on her and she moved up to meet his down strokes, about this time she felt the effects of the enema and was starting to cramp I shut the clamp off and told them to lay still and not move for a few minuted, he layed there about 18 seconds and the warm water in her along with the warm pussy he shot off without even moving, when he got off I released the clamp again, and she reached beside the bed and started to gently massage my dick again, I stepped closer to the head of the bed and she rolled on her side and begain to give me another blowjob, and it didn't take long for me to have another load ready to blow into her mouth, at the same time her brother was fingering her pussy, she was able to take the whole 2 quarts of enema, and her brother kept his finger in her all the way to the bathroom and she had another large climax at the same time she started to expell her enema.After all of this we all got in the shower together and cleaned up. My granddaughter did take the enema bag to the shower with her, but that is another story.