"Always tight for you, honey," she gasped as she neared her first orgasm of the morning.I pressed a finger against her clit and rubbed quickly as my c...ck thrust hard up into her hot velvety pussy. She moaned again, and the moan turned into a scream as I felt her walls contract around my hard, throbbing, thrusting cock."Yeeeesssssssss, baaaaabbbyyyyy!" she screamed as I felt her coming around me. I held myself inside her until she calmed down, then moved back and away slightly so she could lie. She resigned herself to her fate.“repeat after me”, I said “From now on, I am your property, I will do whatever you say when you say it, you are my king and I will obey your every command.” Mandy repeated the words slowly and reluctantly. I undid the zipper on my trousers, my dick was throbbing, “suck this, bitch” I said.“yes master” replied Mandy.I leant back and felt her warm mouth enveloping my throbbing cock. It was so great and just as good as I had always imagined. I grabbed her hair, “. Doctor Harris then explained that the institute wanted to try anexperiment. They wanted to transfer a female uterus and Fallopian tubesinto a male getting a sex change and see if that person could have aperiod.I was shocked, first I said no, "You're crazy, you can't do this." butthe longer we talked, I realized it would be the only way and I couldnot live like this. "But my parents will never go for it." Don't worry about that, we won't tell them." said doc Harris."What will we tell them?" I. George, please assist me.The two of them slipped off Margaret’s pants, licking and kissing the skin being exposed. “George, isn’t she even more naked with her top still on?” He nodded, previously not having thought of such things.Greta opened his robe and brought his penis to Margaret’s mouth. They quickly established a rhythm. Greta dropped to the floor, wiggled between the two pairs of legs, and propped herself up to lick Margaret’s bottom and front. Once she was in position, she began.