I felt Derrick’s cock swell, and then jerk hard several times; knowing that every spasm was splashing another stream of thick cum deep in to my body... Oh my God, I thought, there’s going to be an absolute river of cum in my ass.Derrick pulled out of my throbbing ass hole, collapsing back on the bed. I pushed myself to a sitting position, ignoring Dave’s cock for the moment. Bracing my hands on Steve’s chest, I began pumping myself up and down on his rigid cock. The darling bastard reached out,. He cupped my balls and wanked me again saying what a nice young cock I had and then went down and started sucking me.The dog was yelping in the back so he had to stop and go open the back door to let the dog out. I sat there looking down at my wet hard on and started wanking it again until he got back in the car.When he got back in, he told me to slip my jeans off, so I did while he watched and started getting his own cock out. He got me to lay back and played with my cock while wanking his at. My older sister was far more accommodating and would let me help myself to her underwear, but she is away at university. My younger sister is just out of school knickers and into fancier underwear and far more private. The last time she caught me in her room I had her dark green knickers on, she told me to get them off and get out of her room. I did as she said, but I know she saw my cock, as I walked out she let her hand brush my arm. I went back to my room and sat on the bed, a minute later. I figured that, with her being a physician (and not yet in possession of the results of my blood tests), even if she did have sex in mind, she'd want it to be protected sex.It was a long time since I'd purchased (or worn) a condom. I hadn't been kidding when I'd told Lucy that I was no Don Juan in baseball pants. My relationships with women had been mostly long-term and had always featured a modicum of mutual trust. Accordingly, in just about every case, we had used birth control pills and had.