"All the time we were talking I was sliding my cock gently in and out of her now fully relaxed anal channel to which she had begun responding by lifti...g her buttocks to meet my forward thrusts.It had been a long time since I'd been in a position to have a warm, willing body, so it was no surprise to me when my safety valve blew and I filled Gemma's rectum with hot semen.It was a lot of hot semen and I had responded to the first alarm pulse by changing my thrusts to very fast and hard.Gemma. She admitted to Elsa that she was amazed at how long some of our sexual encounters lasted.Shortly after Celeste and Julie started, I had emphasized to the others in the family when we were out of earshot of the two, that I didn’t want our spontaneous behavior to stop. I wanted Celeste and Julie to adapt, not the other way around. Despite my comments, I did note a decrease in the lovemaking taking place in the common rooms.Celeste never indicated any disapproval in what was happening. She took. That’s when Dan said to me,”Do you think he had a big cock like this one?”I was sitting at a light and turned my head to see Dan stroking his cock, clear as day, in my back seat. This was a first for me. I’ve honestly never had someone this bold just start jerking off but I did put off a lot of signals this was likely okay. Maybe Dan just liked showing women his cock too. He was bold enough to ask, “What do you think?”As the light turned green and I accelerated through the intersection I told. Perfect Punisher, first for Spankingjenny. Later many more.I got promoted to Prefect and Professor at my 'Experimental Erotics International Institute' in Amsterdam. I have hosted there 'dirty dozens' of Sex Students from all continents, ages between eighteen & sexy sixty.In my private love life I had dozens of virgins, some still teen, several in early twenties, or 'virgins' in coming.I used to keep my daily notes about my private life in handwritten diaries. I started to do them 40 years.