I pushed a little bit more and suddenly found myself balls deep. We both took in a sharp breath at this sudden deep penetration. I could not believe t...he sight before me. My sister madly blushing, covering her eyes with her brother's cock stuffed deep in her pussy. She looked adorable and lovely and the whole situation too intoxicating and exhilarating for me. I exploded and deposited the first load of fresh serum into my sister's womb. She parted her fingers and allowed one eye to peek through. Honestly, we weren't ready. The three of us had done the Lamaze classes but we just weren't mentally ready. But, the baby said she was ready and I watched my pretty niece give birth at our local hospital and there I sat with a warm baby girl in my arms, Mary.It was 5 weeks later that my phone rang at 1am and shook me out of a dream of me fucking my boss' wife. "Uncle Ray, I'm sorry to wake you. Can you come over tonight?" Be right there!" I answered as cheerily as possible when you are ripped. My hands running up and down her sexy fit body. Cupping her amazing nice ass and starting to grind back and forth. As we passionatly kiss on the couch grinding back and forth, breaths getting shallow, sweat running down our bodies, getting hot and heavy. I bite her neck and slide my hands holding her hips pulling her closer to me. "I sure know how to find trouble" she says, "Yeah you sure did, do you wanna take this away from here?" She giggles and stands up grabbing my hand to go outside to. For a few seconds she tilted her head to and fro as if searching for something and I soon realized she was searching...for Cristina’s lips.The most beautiful sight then unfolded before my eyes: Cristina began kissing Sarah back, their soft lips tugging at each other’s. Jeff’s head turned in my direction and he saw it too. Our wives were kissing each other, tentatively at first, but with building confidence. Sarah opened her mouth and stuck out her tongue a little bit to trace Cristina’s lips..