I had forgotten at this point about the watchers but when I noticed some movement at the window I saw that he had approached the window and was standi...g within a few inches and rubbing his crotch which looked very hard from the way he was grabbing it. I told her to look up and she saw him and just stared with a glazed look on her face. She told me “open the door.”I said that would not be a great idea. She then in a more demanding voice, “ open the fucking door and let him in.” Like I said. She then kissed him down his body until she arrived between his legs.He tried to mumble a protest, but his rock-hard cock clearly overruled him.Even as his sister, older by five years, slid his organ into her mouth he was clearly, as I saw, worried about how he should react. His sister was giving him a blow-job, and he liked it. Not something which occurred in the ordinarily ‘normal’ family unit, as he would later tell me.He locked eyes with me as my ex-girlfriend carried on sucking on his love. As I heard the garage close signaling mommy was now on her way to work, I slowly pulled my door open and walked to my daddy's room. I stood behind to cracked door just looking at daddy making sure he was asleep. Tip-toeing into his room, past him and onto my mommy side of the bed, I noticed a big tent near his nether regions. I smile and lick my lips as I slowly crawl into bed and lean towards daddy's ear, "daddy...daddy?" I whispered, his eyes barely opened,"huh, what sweetie, whats wrong?" he. Twenty years ago, the plan was for Jeff to teach her how to do both on their honeymoon. But now, she felt she was at past the age of learning new tricks. So, while Jeff would spend a bit of the day skiing which he did really enjoy, Calissa would spend the time in front of the fire reading, watching tv, or going over that dreadful script trying to figure out how she could make it work.When Jeff would return, they would fall back into their sexual pass time, followed by more squabbling, leading.