I quietly motioned to Bill to continue, and walked softly to the kitchen. I took my time, silently stirring dinner so it would cook evenly. I had left...my wife alone with Bill! How much did I trust him? I couldn’t bear the suspense. Even though only a couple of minutes had passed, I crept back to the den. Bill was slowly stroking his cock with one hand, and tickling my wife’s clit with the other, one thumb buried deep in her pussy. As I watched, he started to slowly slide his thumb in and out of. It was one morning towards the end of my university examinations that Iwas woken with a surprise to the sight and sensation of my sister suckingon my cock. I'd barely woken up before I found myself cumming in hermouth - clearly she'd been working at it in my sleep."Brother, I thought I should let you know. I haven't had my period..."she said, after swallowing my load.The idea that I had impregnated my sister had occurred to me in the past- after all, at least half the times we had sex had been. He walked in circles around me slowly examining every inch of my body. I'd posed in front of a mirror enough times that I knew what he saw. I was five-foot-seven and had an athletic build. I wasn't all muscular, but my arms, legs, stomach, and ass were all quite firm and toned. My breasts were between a 34 B and C depending on the cut of the bra and also the brand. Not really small, but not large either. They were plump and round and stood out from my chest with impossible firmness and youth.. I’ve simply told them that you have done nothing except treat me as a friend, and I would never do anything to violate our friendship, nor would I think that you ever would.”“To what end? It is not as if you are a government agent or in the military, or work for a company with classified information. I do not think a programmer of alarm clocks and video games has any secrets to share,” he said with a smile.I chuckled, “Between the KGB and the FBI, I’m going to have more investigations done of.