Her hand was already back on my penis, guiding it to her vagina. She raised her legs, crossing her feet behind my hips as I entered her, pulling me in...to her.Sensation of penis entering vagina is hard to describe, but roughly is like this: if you are woman, imagine that your clitoris is on tip of your finger. Then, insert your finger into your vagina, and try to imagine that your sensations are not in your clitoris and vagina, but in your finger. It is something like that. And as you keep moving. But I was too open in looking and got sent to bed with dad being angry. I wasn’t sure why, but it was more than because it was just past my bedtime, I knew that.”“Yes, your father had been almost about to cum and didn’t appreciate being hampering when humping. Coitus interruptus was not on the agenda in those days.”“I did sneak down twice more and peaked at what you two were doing when you were making those cries. I was very curious to see what intercourse was all about. You didn’t catch me. He’s got mom and I wouldn’t want to mess that up, god no. Its a dead end and its hard enough to keep it secret and not feel guilty.” I told him seriously.“I know sis” he said in reply.I went on, “That also means its a dead end for us as well, you’re my brother. I don’t want us to stop each other from finding that special someone by complicating things.” “It won’t, I am not stupid I know it can’t work outside of a bit of fun sis. But what's a little fucking between brother and sister on. Being the perv that I am, I would leave a space open in the bottom of the blinds and then run outside to the window when I knew she was getting ready for bed. I’d watch her slowly strip out of her clothes and take off her bra to unleash her beautiful tits, two inch areola with long thick chunky nipples. I’ve come on the side of the house just watching her walk around the bedroom with her dark thatch visible through her white panties, and her nipples slightly visible through her bra.It was one.