A freaky step daughter # 5

It was Saturday Night at 7:15 when my wife got home she went straight into the shower. At right at 8 she was standing at my side saying she is ready. As every Saturday night we went out for supper at the local sports pub, they had the best steak dinner in town. When we got there I was told that there was a small $10 race to three pool tournament tonight. I consider myself a fairly good pool player so I entered the tourny. My wife said she was tired tonight and didn’t want to stay for the tourny so she would call Sue to come get her after supper. We had a few drinks with our supper, then when it was time for me to play she called Sue to come get her. I was in my second game when Sue arrived after my shot was done Sharon bought two 12 packs of beer, kissed me and left with Sue and Mindy. The tourny had started at 9 so at 11:15 Frank and I was on the last game. I broke made the 8 but scratched so I lost the match on the hill. I ended up getting $35 for finishing 2nd. I finished my last drink and headed home.
So I will tell you what was happening at home while I was at the pub. I learned this the next time I talked to Sue in private.
Note to reader in my state 18 is legal beer drinking age.
As the girls got home they started having a few beers and watching a movie that Sue had rented earlier this evening. By now Sharon was feeling no pain as she has never been a big drinker. She was slurring a tad and giggling a lot. When a scene of the movie was two lesbians getting raunchy in bed. Sharon looked at it and said you know I have always been curious about doing that. I always figured it would be great because its like only a woman knows what a woman likes. Sue turned to Sharon and said Mom it is great Mindy and I have had sex with each other and we love it. Sharon’s mouth dropped open and she just looked at Mindy as Mindy shook her head yes and smiled. Sharon still just sat there and stared so Sue took the first step and said Mom just watch.
Sue stood up started stripping then told Mindy to take her clothes off also. Sharon sat there and watched as these to beautiful young ladies was taking their clothes off. After they was naked Sue stepped to Mindy and they started kissing. As the kissing got hotter they started caressing each others bodies. After a couple of minutes of this Sue broke apart from Mindy then reached down and moved the coffee table to the side of the room. Mindy knew why she had done this and laid down on the floor where the table had been. Sue now returned to Mindy and laid down beside her and they started kissing and fondling again. Sharon had now leaned over with her elbows on her knees and stared at what was happening on the floor in front of her.