We will start with front muscles also known as quads/ quadriceps. Thus they should do sit ups with legs just shoulder width apart and keeping toes str...ight, and they did it without my intervention. They also did 10 counts with the weights without my intervention.Now I told them that we would do for the back muscles and repeat the entire sit-ups schedule the same way but just keeping their toes pointing outwards. After completion of the sit-ups I noticed that both of their underwear has moved in. 'We were half way round the lake, in an area of its bank shaded by trees, when Holly turned to me.'You know, they're a couple of sluts. Jane and Anne. What they want you to do is put babies in their bellies.'I stared at her, aghast at the recollection of Holly's friends rubbing my semen into their pussies.'What?''They're not on birth control, as far as I know, ' said Holly. 'Of course, they might be: even girl friends don't tell each other everything. But they've always said they aim to get. She licked my dick and then took all eight inches in her mouth! No other girl had been able to do that. I came way to quick ,but she was fantastic. I asked her were she learned to suck cock like that ? She smiled and said she had watched her mom with lots of men . Over the next month we went out a lot , well we parked a lot and made out and she sucked my dick a lot. I finelygot my finger in her and she went wild. She had two orgasms in a minute . I told her I wanted to lick her pussy and. I gave her the number and went off. I told the other guy what was happening and he asked if he could join us. So we both went to my room and waited.We didn’t have long to wait before there was a knock on the door and there she stood. She was a bit surprise to see John, the other guy but came right in. I closed the door behind her and immediately grabbed her from behind with a hand on each tit. John stepped forward and started stroking her pussy through her bikini bottoms. I was kissing her neck.