I am a 28-year-old average guy, but this sex story began about 10 years back when Yahoo Messenger was still a thing.It was just my dad, my sister who ...as elder to me by a year and a half, and I live in a big home. Mom passed away when we were little, and I faintly have any memory of her. It’s our hard working dad who brought us up, and in a fairly good manner. We were financially well off.Now about me, as mentioned, I was an average person, but what I was good at was with computers, and was. Not lose enough for me to slip out of but not so tight that they bothered me. He leaned into me and kissed me, our tongues dancing together before finally he drew away. He looked me in the eyes and raised one eyebrow, I nodded again.Gathering up the bundle of rope I saw that it was actually four pieces of the same length. He took each piece and with quick hands soon had one end of each tied to each one of the cuffs. He tugged on them a bit testing the knot and I felt the first quivers of. " Laurie heldher arm up."Got it," I walked over to Laurie and began to inspect the costume. "Youknow, it's funny, I keep thinking there was something I wanted to tellyou tonight, but for the life of me, I can't remember what it wassupposed to be!" Oh, I think I have an idea. Don't think I haven't noticed you staringat me all those times you think I'm not looking," Laurie said."What are you talking about?" I asked nervously, trying desperately tokeep my gaze on her costume and not her. Sky hugs and gives her younger sister a kiss, "Good morning" she says. I ask, "Do I get one of them ?" "Corse Daddy" Sky says, and hugs me, but no kiss, and all quite proper. "Jenny and I are having bacon sandwiches Sky, what would you like ?" I ask. "Oh that's fine for me too Daddy please" Sky answers. Jenny pours glasses of orange juice for all three of us, and we make a bit of small talk about how we all slept, and about if we want white or brown bread, and about if its ketchup or brown.