Dad’s Help

My son and I have been on our own now for a few years ever since his mother left, not to be heard from again. Jeff was 11 at the time and it took him several months to finally accept that his mother was gone for good.
We did the usual things together, baseball in the summer, football in the fall, skiing in the winter. He seemed to adjust quite well and had several very close friends. One of the, Peter, lived next door and they spent a lot of time together doing the things boys do. They had many sleepovers, both here and over at Peter’s house but one night, Jeff found out something about Peter and his family that seemed to bother him quite a bit.
One night about a week after his last sleepover at Peter’s, he came into my bedroom with a scowl on his face.
“What’s up?” I asked.
He didn’t say anything for a few minutes but got onto the bed with me, sitting crosslegged facing me and started.
“You know the other night when I slept over at Peter’s, I found out something about him and his father that has bothered me since.”
I put my book down and looked at him urging him to continue with my eyes.
“Well, after we went to bed, I woke to go to the bathroom and Peter wasn’t in his bed. I walked down the hall to the bathroom and when I came out, I noticed a light coming from his parent’s room. I didn’t think to much about it as they are adults and probably stay up a lot later that I do.”
I couldn’t help but smile a little at this comment but didn’t say anything.
“I stayed in bed for a few more minutes then got up again and walked down the hall. I stopped outside his parent’s room and listened. I stood with my back against the wall but close to the open door. At first I didn’t hear anything then I heard Peter’s father.”
“What did you hear?” I asked.
He moved closer to me but didn’t adjust his crosslegged position.
“Well, I heard his father say something very dirty,” he whispered.
“What do you mean dirty?” I asked.
“Well, he used that word that I don’t like.”
“Oh, what word is that?”
“Well, I don’t know if I should say it.”
“Its okay son, it’s only you and I here and nobody will know about what you’re telling me anyway.”
“You promise you won’t get mad?”
“No son, I won’t get mad.”
“I heard his father say fuck.”
I hesitated before speaking, trying very hard to keep from laughing.
“Well, that isn’t a very nice word but what was he doing when he said it?”
“I didn’t know just then but I found out shortly after that.”
“Oh?”
He hesitated before continuing.
“I peeked around the corner of the door and saw Peter and his parents on their bed.”
“Yes.”
“Well, they were doing something I didn’t think families ever did.”
“What was that?” I asked, my interest starting to peak.
Again he hesitated.
“They were having sex.”
I looked straight at Jeff and waited for him to continue, not saying anything.
“Peter was between his mother and father, having sex with his mother while his father was having sex with him. I couldn’t believe what I was seeing but I couldn’t take my eyes off them as they continued for quite a while.”
Now my interest was completely aroused by what I was hearing.
“Who was doing what to who?” I asked.
“Well, Peter was shoving his cock in and out of his mother while his father was shoving his cock in and out of Peter.”
Now my cock was really interested in the story.