My Sisters’ Tits - Sex Stories

My Sisters’ Tits

... already. Are you ready for your first treatment?” “Wait, let me take off my blouse first” I grabbed my cock and started stroking it. My sister had seen me naked countless times and watched me fuck and cum so often, I didn’t feel any embarrassment to do this in front of her. Jenny moaned softly as I jacked my cock and if I hadn’t known for a fact that she was gay, I would say she was getting quite aroused too. It truly was a shame that my sister wasn’t interested in boys, because she sure did have magnificent tits. Though they were a bit small, they were perfectly round and very firm. Her immaculate skin was soft and creamy and she had little pink nipples, which were all puckered up as they stood erect. The fact that these beautiful globes belonged to my lesbian sister only heightened my arousal, and even though I had deposited a huge load on Vanessa’s tits only ten minutes ago, I already felt my muscles tighten as another orgasm rose. Moments later I felt the first wave of sperm rush up my cock and shot a thick white stream of cum on Jenny’s left boob. My sister watched in awe as my seed sprayed over her tit. After I was done and had wiped the last drops on her supple flesh, Jenny rubbed my sperm into the creamy skin and kept massaging her breast until every last drop was absorbed. “There, it’s all gone. If it doesn’t work now, it never will. Agree?” “Whatever” I panted, exhausted after another great release. My sister just laughed at me and told me to come to her room ...

... again that night. For the next month, I would come to Jenny's room every morning and every night. She would take off her nightgown and, wearing nothing but her little white panties, present her left breast, ready to receive another load. As my sisters shared a room, this meant that Emily would be there too. It was pointless to keep it secret from her, and she didn't seem to mind. She didn't join us, either. She never touched me or her sister, not even herself. She just lay there, silently, never letting her eyes stray from my cock or Jenny's breasts. The days flew by as I generously coated my sister’s left breast with copious amounts of cum. Much too soon, an entire month had passed and it was time to see if our experiment had yielded any result. We both watched as Emily carefully and meticulously inspected and felt her twin’s breasts. After a minute she finally concluded that the left breast was still slightly smaller than the right one. “There, I told you it was bullshit” Jenny said, a little disappointed she hadn’t grown a bit, but happy with the 50 dollar she won. I did not complain. Sure, I had worked hard to get that money, but it was well spent. 50 bucks was a small price to pay for a month of playing with my pretty sister’s perfect titties. As Jenny was buttoning up her blouse, I couldn't help but wonder if, with the conclusion of our experiment, her breasts were now forever off-limits for me. It would truly be a loss for mankind. “Did you say something?” Jenny said ...