He was very pleased that I did though as it enabled him to give me a greater range of experience. It was called Autonomous Sensory Meridian Response (...SMR) and it affected people differently and there were different triggers. For me, it was an intensely pleasant tingling sensation that began around my ears and spread across my head and down the back of the neck and upper spine. He described it as the subjective experience of "low-grade euphoria." I knew what euphoria was and that was about. "I was ready to obey any instruction so did as he asked."FUCK ME. FUCKING HELL, THAT IS SO FUCKING GOOD." I screamed at the sensation the movement caused in my pussy and especially on my clit."Sally, I wish you wouldn't swear like that," Dad said.I burst out laughing, "Dad, you do know what we're doing, and you're unhappy about me swearing."In reply, Dad thrust up hard into me, bouncing me up and down, up and down.Up...And down...Up...Down...Up... ...DOWN."Fuck!"Dads hands were on my hips. Not only was the inside of her ass the kinkiest, tightest thing I’ve ever felt, and her bowels a filthy sloshy bed of resistance around my cockhead.. But she was once again in firm possession of my cock with her huge strong buttocks. I spanked her hard on each buttock during, spurring her on.. I must have lasted about two minutes with that. “I’m gonna blow..” I said suddenly feeling self-conscious, as absurd as that sounds. Seeing I’d been face and cock deep up this woman’s nether places all. I got fresh & we had our dinner, then we went to our bed room for sleep. after small chat she come near to me put her hand on me & said to put my leg on her, she was very close to me whereI can feel her breath on my face slowly she bring her hand to me head push me to her & she kiss me on my lips immediately I said what are you doing this is wrong. She said ok again thing become normal.After some time again while talking she kiss me, this time I was also feel good because this is my first kiss.