I posted "bi-sexual" but that's all new to me now in my late 20's. It all began when my brother asked me to put up their daughter, my niece Vicki, up for the summer while they finally took their long awaited trip overseas. Vicki showed up later than expected with a backpack. She said she pocketed the travel money and hiked. She looked disheveled and before I could say anything she said, "Don't worry, I made the old fart wear a condom."

She was in her early teens and sounded like a road whore but I listened because I had grown lonely mostly alone and Jack did not want me to go out and find a job. Soon the two of us were like sorority sisters, giggling and telling stories. She wanted to know my biggest sex secret so I told her that my husband, Jack, her uncle, had morning wood that made my eyes pop out. His regular hard on was fine but the cock standing out of him if he was sleeping on his back was awesome. I would mount it and was suddenly in heaven. I could see Vicki lick her lips as I talked and our stories got us both hot.

Vicki started kissing me open mouthed and I found myself not only responding but feeling dizzy from desire so we started all kinds of sex, including tribbing, which Vicki loved. We sucked and licked each other's bodies all over and ended up working out tongues deep into each other. Then, Vicki said she wanted to see Jack's morning wood. We woke each other early and went to watch Jack. We had to wait a few days before the moment came when he was on his back and the monster began to grow.

All the time, being seduced by my own niece, I was terrified that Jack would find out, freak out on me and pack up and leave. I realized that if Jack woke up buried balls deep into his niece, he had no alternative but to surrender peacefully. When Jack was at full mast I could hear Vicki'a hot breath. She said, "I've got to have that, it's majestic." I said, are you sure you can take it? She answered that she already had done some that size. I asked her if she needed lubrication and she said, "No, I'm soaked now." Then, she slipped a condom on Jack and straddled him as he was till asleep. She let out a groan as she slid his hard cock into her vagina and then started moving slowly. She would go up and down, then slide up and back and roll her hips.

Jack had a powerful orgasm, woke up and the rest is family sexual history. When Vicki had to leave, her parents having returned, my sister called to ask how it had all worked out and I said that she was the perfect guest and would like her to come back whenever she wanted. That was the first of a number of summers we spent with Vicki and her wild ways.