“Fuck” I said with a laugh. Cat giggled “Well at least it’s your own jizz, that’s less gross I think” “But no less embarrassing. Oh well... let’s hurry up so we can get back” I backed out onto the road and we headed to town. We made it back an hour later and I put the new fan belt in dad’s truck before heading inside to join everyone. Amy my other older sister had arrived with her husband and two kids, or three if you counted the one she was carrying in her belly. I had no idea she had another. They had also both enjoyed the erotic setting of doing it there in the same room so the two young men could feel some companionship of fucking their mothers with someone else there in the room doing the same thing.Now it was time for the two adult women to take their plans for their sons to the next step. They'd both planned to take their sons' sexual "cherry" and now they would swap partners and the two young men would fuck the other women before the evening's fun would finish for that day.Sue. The guys in the gym have just about got used to seeing me in my tight, red lycra but they were surprised to see me with Laura. I was in my red shorts for a change and my shortest white crop top. Laura was in her skimpy yellow shorts and a matching yellow vest. I looked in the long mirrors as we went in. We looked hot and we knew it. Our shorts were barely covering our bum cheeks and they were really tight at the front, if you know what I mean. Then with me being a double D and Laura a double E,. I want to do this for you. I want your first time with a dog to be good. Helen will assist in getting him into you. If you decide you want to continue enjoying our dogs, either of us will gladly help you learn the tricks to successful mating for you and the dog and in the process develop the strength to hold yourself up for longer times.” I got onto my hands and knees in front of her, “Now, do me the honor of letting me assist you.”“But … you’ll be left out of the fun.”“Don’t believe it; Helen.