I woke up on Christmas Eve morning gradually, feeling Angie's warm body in front of me. Squinting one eye open, the alarm clock on my night stand displayed 6:50.
I lightly ran my fingers along Angie's arm and the side of her breast closest to me, causing her to squirm in her sleep but not waking her. I was getting hard, my cock extending between her legs. I rolled back to let it spring against my stomach and when I rolled behind her again, it pressed between her buttocks. I lay there for a minute or so, debating whether to sheathe myself into her pussy while she still slept or to wake her up first.
I decided against either one, starting to slide my cock along her ass cleavage. I slid my right hand under her arm to clasp her breast. She squirmed some more, but still did not wake. I wondered if I was affecting her dreams. I was getting closer and closer to orgasm, so I grabbed a tissue from the nightstand behind me to catch my jism.
Just as I came into that tissue, I heard a creak of the floor near my doorway. My grandfather, Hank Swanson, was standing in the doorway, a grin on his face, before he took a seat in the chair next to the desk. Clearly, he had seen what there was to be seen, which thankfully wasn't much, since I was behind Angie.
"Merry Christmas Eve, Grandpa," I whispered, trying to avoid waking Angie. I realized that our covers had slipped downward while I had rubbed against her and her upper body was exposed to him. I pulled the sheet up to cover her breasts, too late to really protect her modesty.
"Merry Christmas Eve, Derek," he said, softly but not whispering. "Beautiful girl you have there. This is your Miss Angie, I assume?"
"Yes, Grandpa," I answered. "Who else would it be?"
"At first glance, Angie quite resembles your mother at that age. But I suppose that the more realistic option would be Miss Alissa Gould from your university, no?"
Why would he think I was in bed with Mom? And how did he know about Alissa? 'Don't panic,' I thought.
Trying to stay calm, I said, "No, Alissa and I are far from being a traditional couple. We get together for casual sex on campus, but she's never visited me here."
"Traditional?" he asked, chuckling. "When has your family ever been traditional? The grapevine says your parents are back to being swingers, reinforced by Ms. Jilly Tirman being in their bed this morning. Your brother getting engaged to Jilly's daughter Jessica, who is in his bed down the hall, is connected to that reunion, I expect. And I hear that you and Ms. Angie here have joined your parents at Jilly's swing club, too, so you must be aware of their past."
"Grandpa, are you sure you weren't in the CIA during Vietnam, instead of Infantry? Your intelligence network seems to know everything."
"Not everything, Derek. Maybe not the most important things."
That snapped me to full alertness. I asked, "Can we talk about this downstairs? Let Angie sleep?"
"Certainly. I'll let you get dressed, since I assume you're just as naked under your covers as Miss Angie." He stood up and walked out of my bedroom.
I slid out of bed without disturbing Angie and tossed on a tshirt and some sweat pants and went downstairs. In the kitchen, I started a pot of coffee, then sat at the table across from my grandfather, wondering just how much he knew. I figured grabbing the bull's horns was the best approach.
"Okay, upstairs you were being vague about not knowing important things," I said. "Ask the questions you want to ask."
"Are you and your mother lovers?" he asked.
So, hinting about Mom being in my bed was intentional. But did he know or just suspect, like Jake? I decided he could be trusted, either way.
"Yes, we are. And she's been with Tommy as well. See, wasn't that much easier than hinting at it? What tipped you off?"
Grandpa answered, "I assume your mother told you about her past with me, in addition to swinging with your father."
"She did," I said. "Elf costume and all."
Grandpa continued, "I knew Stan was opposed to Marcy remaining intimate with me after they got engaged. I was also aware of their swinging activity over the years. It did not take a genius IQ to know that the two of them making announcements that they were quitting the swinging scene and then parting ways with Jilly just before Tommy turned 18 was all about Stan trying to block your mother from seducing first Tommy and then you as you came of age. So, when they returned to swinging a month ago, I assumed that meant Marcy was free to pursue you and I doubted she would wait long, with both of you boys home for the holiday. Yet, you and Tommy both getting engaged meant either that your fiancees were not aware or that they are aware and accept it, even participate with you. Given that supposition, your parents' purchase of a larger home for all of you to live in signals that the seven of you are planning to live together over the long run. It was more than enough for me to form a suspicion of incest as a group activity."
"How did you find out about the house so fast? We just did that yesterday afternoon."
He answered, "The real estate agent is one of my best friends. As soon as the Winslows called him about the offer, he recognized your parents' names immediately and called me to figure out how they knew the Winslows and I explained your Aunt Laurie is their niece. I probably heard from him before you got home."
"Are you upset about the incest, Grandpa?" I asked.
"That would be mighty hypocritical of me, wouldn't it? I'm only concerned about all of you getting caught," he answered. "I taught Marcy to think for herself and I have rarely had reason to fault her for the conclusions she reaches. One thing we agree on is that sex should be a means to express love. Even when elements of our society try to restrict it to procreation between married, heterosexual couples. Most people are opposed to incest because of how often it represents abuse, not love. But I know what your mother and I did was not abuse and that she would never abuse you boys."
"There's more to reveal, but I'm not sure I'm the one you should hear it from," I said.
"What, that Jessica is Stan's daughter, Tommy is Sam Tirman's son and that Angie's father Jake is Sam's half-brother?"