It had been set up for my sister in law to drive the hour from the town she lived in to our town and take more photos of Christine. The only restriction was  i couldnt be there when the photos were taken. It had been set up for yesterday. my sister in law was to be at the house at 10 am and i was going to show her how to use my camera. The set she took the pervious week were shit and it was, from what christine thought was she didnt know how to work the camera, plus she was nervous and did spend mesmerized watching christine masturbate  instead of snapping photo, lol. but i cant blame her for that. After i showed her how to work the camera i was to go somewhere else. Well the best laid plans dont always work out. Monday night Christines sister called and had to cancel. She said she would try for today.Well Christine called her last night to make sure she was coming today, but never got an answer, so we fiqured she had gotten cold feet and was avoiding the call. Well guess what. At 10:15 this morning guess who showed up. We werent ready. Christine hadnt shaved her pussy fresh and i didnt have the room set up . Debbie ( Christines sister) explaned that yes she had gotten cold feet but decided this morning that she wwould keep her word and do it, and she tryed to call christine on the way down but christine wasnt ansering ( turns out christine ringer volue had somehow gotten turned down to nothing)  We had gotten up at 7 and i was horny so me and christine had just gotten done having sex maybe 30 minutes before her sister arrived. I explained to her that i didnt have the room set up for photos and that christine hadnt shaved since the last time thy took photos and that if she wanted she was off the hook.  Since i had just gotten off i was satifed for the day. I told her that since she was here they could just sit around and talk and drink coffee if they wanted. She said ok and came in. Well i didnt want to sit there listening to two old women gab, so i told them i was going to go visit a buddy of mine and be gone a couple hours. I throw on my shoes and headed for my car. Well i was at my buddys for 3 hours and when i got home, christine handed me a sd card and said have i got a story for you. I guess they sat around for half an hour talking and Debbie ask christine about her toys and ask if she could see the sybian. When she took the photos when we moved them i guess christine had mentioned them to her. Well Christine aims to please so she took debbie down to our bedroom and showed her, well debbie keep asking about the sybian and all the attachments and that she had read that it was the best orgasam a woman could have. Well Christine said i dont know about best, but its up there.She asked debbie if she wanted to try it that i would be gone for awhile, she also mentioned about us having sex earlier and that she had only had one orgasm and that she was still horny and had planned on masturbating anyway. She told debbie that if she wanted privicy that she would tell her how to use the controls and debbie could get off in the bedroom and that she would take her magic wand and masturbate with it in the living room. She said Debbie didnt even think about it she just said cool.  Christine hadnt gotten dressed and was still in her robe nothing under it. She told debbie to pick out an attachment  and she did, it was the 6 inch dick shaped one and christine put it on the machine and showed her how to work the control, she handed her a bottle of lube and stripped off her robe throw it on the bed and went to the toy drawer and got out her magic wand and went to the living room. Well i guess curosity got the better of christine, she had watched her sister masturbate for about 5 minutes the last time but never saw her get off and she wanted to see how much differnce there was between the two. Christine is very vocal. So she got up and went back to the bedroom,  She hadnt shut the door so she walked in. Debbie was naked with the 6 inch dick attachment up her cunt rocking back and forth on the sybian. Christine said her eyes had this blank stare and she was moaning softy. She asked debbie if she could watch and debbie just mumbled and shook her head yes, but then got her voice and asked christine if she could use a bigger longer attachment. Christine got in the toy drawer and debbie climed off the sybian. As she pulled out a 8 inch big fat dick attachment she asked if this was ok or bigger . Debbie walked over looked in the drawer and saw a big black dildo that 12 inches long and as fat as a beer can that i had rigged up to attach to the sybian, that christine uses. She looked at it and said oh my god who in the fuck could ride that one and laffed. Well chistine had been scoping out her sister body and told me she guessed her tits were 32b or c with small aeroles but really long nipples and that her pussy was bigger than she thought. Christine laffed along with her sister and said that she rode it and it was one of her favorites. Well debbie settled on the 8 inch one and christine said she didnt even have to lube it up. It just slide right in. It took Debbie another 5 minutes to orgasam and christine said she is just as vocal as her. When debbie came back to earth, christine said i havent gotten off yet im going back to the living room. Debbie said wait i will do the photos and christine said you dont know the camera and debbie said i brought mine and got a new sd card for it so you can have it. Well they set up a small bed in the living room using two foam twin mattress pad and i will post the results of the photos tomorrow. They turned out ok. I asked Christine if the 8 inch attachment debbie used was still on the machine and she said yes, why. I said i know your sister wouldnt let you eat her pussy, but do you wonder what it taste like. I said why dont you go back and clean her juice off it with your mouth, as in suck it clean. I told her to strip first ( she had gotten dressed) and to get on all fours to suck it and that i was going to ass fuck her. that her talk had got me horny again. Christine isnt real good at blow jobs but did get about 5 inches of the attachment down and licked her sister juice off the lower 3 inches.  So it has beed a good day.