About 33 at time of story.
When my brother-in-law was about 24-years-old, he came to live with us, as he wanted to work in the North-East.
Gil is a great guy, fun to be around, good looking, with a great personality, but he had the ability to be a pain in the ass at times.
One night, my wife and I were in bed, and Gil decided to come upstairs and start to chat. Though we enjoyed his company, he was beginning to overstay his welcome, as we were going to fool around before retiring.
Anyway, since he didn't want to leave (it was intentional I am sure), I started to play with my dick, and soon had a nice woody. My wife saw it, and came over to be closer to me.
Now it was time to 'shock and awe' Gil, he turned to see his sister, and there I was with a great hard on. He took one look at the purple shaft, and flew out of the bedroom.
Once alone, my wife and I wanked to a glorious orgasm, I think the excitement of having a man see my cock made the entire session more exciting.
After this evening, when asked to leave, Gil took the hint and departed gracefully.