I have had many marathons, but none like this. It happened on my most recent birthday, last September on a somewhat dark, rainy cool day. I took the day off and told my wife I was going to play. She rolled her eyes but I knew she would get into it at some point.
I started by making my area by the computer comfortable and got naked, oiling up with mineral oil since the scent of baby oil disturbs my wife. I began looking at stimulating pics on the internet, got hard and oiled up my penis. When I came upon a really hot picture, I would jerk it really fast. This always gets my wife going. She began to squirm in her seat, watching me instead of the TV program, and after a while she was reaching inside her shorts. A few times she came to me, leaning over and kissing my neck, massaging me, and pinching my nipples hard, just the way I like it. Every time I would feel myself close to the edge, I would slow down or stop, sometimes squeezing the base of the head.
This went on for a couple of hours. Then we watched porno DVDs together. This was when she really got into it. With me next to her, she could watch me up close and touch me. We played with each other a little in between playing with ourselves. We got out the vibrators and she put hers to her pussy and I put one to my anus. My wife asked me to put it up my ass so I placed the vibrator inside a dildo sleeve and used vaseline to lubricate myself before putting it in.
My wife watched with great excitement as I stroked myself and rode the vibrating dildo, rocking forward so that it pressed against my prostate, sending tingles all through me. My wife climaxed watching this, and I removed the dildo and continued to stroke. With my wife temporarily sated, I flew solo for a while, returning to the computer.
It was only after getting lunch and eating it that we went to the bedroom together, where we masturbated for another hour together. What had begun at about eight-o'clock in the morning finally finished at about two-thirty in the afternoon when I finally felt it and did not stop jerking until the last few seconds, tightening my muscles and squeezing my cock, and with my wife snuggled next to me, her head on my chest, I let it go, crying out like an animal as the overwhelming feeling rushed through my cock.
I have never ejaculated such a load in my life. It was huge and the first five or six big spurts shot about a foot and a half, a couple hitting my wife in the face. It continued to come out in weaker squirts and then came out in streams that covered my hand. My wife came rubbing against my leg while this was happening, and didn't seem to mind the semen on her cheek until after it was all over.
I lay there so relaxed, with a tingling sensation circling the base of the head of my penis and, after my wife mopped up the big load with a towel, she left me there, where I promptly fell asleep.