This story's characters are over 18.
My wife was downstairs cooking father's day dinner, I was with my 19 year old son who is an athlete while she was with our 22 year old daughter.
In his room, I had my rock hard cock deep in my son's ass. As he faced me kissing passionately, filled up his room with grunting and slapping noises, trying to be quiet.
???: fuck dad, this is so hot,I can't believe how far we come.
Stan: fuck Simon, you so naughty but I love it.
Simon: well dad, you remember how it started, so just fuck me harder.
He was right on how we ended up like this, the day was three weeks ago my wife and I have a good relationship, she was my highschool sweetheart Jessica, now 48 same age as me, she is the mother of Ashley my 22 year old daughter who works with her mother and my son Simon 19 who again is a very skilled athlete.
We were celebrating my son's first gold medal at a sports event and he was sore from running, Simon: dad can you give me a massage? My legs hurt, since I was a masseuse and he was my son. Stan: Sure son, let's go to the studio. I told my wife, Jessica: ok just don't be too long" as she left with our daughter to meet up with the others.
We entered my studio and I handed him a towel and the special underwear that you have to wear when getting a massage, Simon: do I have to wear these, Stan: I'm afraid so, everyone has to, Simon: fine, then I get on the table, Stan: that's right, I'll be back with the oils. I left the room to get the oils and went back into the room.
My son was on the table waiting with the towel covering his privates, Stan: you ready son Simon: yeah dad, I'm ready just nervous Stan: you don't have to be nervous, I have done this thousands of times, with that he relax as I warmed up my hands and began with his calves they were very tight, but I'm not surprised after all that running he did, so I quickly got them loose with my techniques, then I noticed that my son cock was getting hard from it but it's normal for guy to get hard from massages but what I didn't expect was me getting hard from the sight of him getting hard and feeling my son's legs.
I mean I massage plenty of man before my son, not once did I get hard from it and yes I massage women too but I was envisioned someone very old when doing woman to not get hard, so why was my son turning me on, I shaked my head and continued my work on his legs, moved up to his thighs and hamstrings muscles, Simon: damn that feels so good dad. I think he knows that his cock was hard but so was mine at this point, I finished his front.
Stan: You can turn over now son, If you want you can take the underwear off. I never suggested this do anyone else before, Simon: thanks dad, I think I'll take off the underwear, then I lifted the towel as he lifted his back up and removed the underwear freeing his hard cock and It was about the same size as mine 7 inches but not as thick, I couldn't take my eyes of it and I think he noticed as he slowly turned over letting his cock hang for a bit before laying on top of it.
I placed the towel down on his back as I shaked my head again as I started on the back of his calves but I couldn't help notices his cock between his legs as I did my job, I moved up his legs and I felt his cock on my hand as I massage his inner thigh, he let out a moan as I touched it that he arched his ass up, Stan: I think that enough son. I was fighting the urge to fuck him, Simon: no dad, please I need it badly, my back is sore, as he sat up and placed his hand on my bulge in my pants, Simon: please dad, I'll do anything you want if you help me.
The cheeky bugger knew what he was doing to get his way, even if that's touching my bulge. Stan: Fine, lay back down I'll do your back, he does that as I couldn't take the pressure anymore so I took out my hard cock, I got on the table and began to massage his lower back, I massaged him and felt his tightness in his back. I pressed down trying to relax the muscle, my son moaned and lifted his ass up and backwards as I pushed forwards to loosen his muscle when my cock slipped into his tight hole.
Simon: Dad, what just entered my ass, it feels big and hard, you could have said you were putting something in my ass.
Then he looked back and realised what just happened.
Stan: I'm so sorry son, I didn't mean for this to happen, you moved and I moved as well.
Simon: Your cock dad, your cock in my ass, why did you have it out, oh fuck it big.
I moved trying to pull out, he moaned as I moved and he pushed himself backwards taking my cock deeper into his hole.
Stan: Simon! What you doing, I'm trying to pull out and now you have taken my cock deeper into your ass.