Feeling Sorry for MIL

This story is purely fictional.

My wife and I have been married 22 years. Our sex life has been sometimes good, sometimes not so good. My wife's interests have waned a lot over the years. Neither of us are fat or ugly, but her hormones are for shopping, not sex.

Her mother has always had some kind of medical problem. Female problems and back problems have taken their toll. Still, she is one of those great mothers-in-law who don't interfere with our lives, but is generous and loving.

One day I was working at home while my wife was at her work. She had warned me that her mom, Lois, would be staying at our house for a couple of days due to doctors appointments.

When Lois showed up, I took her things to her room. Her recent treatments had really helped her back, and she seemed more spry and upbeat than I'd seen her in years. Since I was at home, I had on track shorts (no underwear) and a tank top. I'd always wondered if she'd had sex in a while, but had never considered asking.
That night, I got up to get a drink of water, and heard sounds coming from her room. Thinking she was in pain or something, I quietly opened her door to check on her.

The dim light from the hall night light revealed Lois to be on her stomach in her nightgown, her right hand down between her legs, and her hips humping away. Her grunts were steady, in time with her rocking. I was stunned. I had walked in on her in the middle of an orgasm, too late for her to stop.

Lois quickly covered herself, I quickly apologized, mumbling that I thought she was in pain, and closed the door. However, I was really turned on by the sight of another woman masturbating, and it was my mother-in-law!

The next morning, my wife was already gone to work. I was in the kitchen, and Lois came in. We awkwardly said our good mornings, and stumbled around the kitchen. Finally, I worked up the nerve to say, 
"Lois, I'm sorry about last night. I thought you were sick or something. I didn't mean to embarass you."
"That's all right", she said. "I think we were both surprised."

"Yeah," I replied, trying to lighten the situation. "At least there's hope for me, that women over sixty like sex."
Lois laughed a little, still embarassed. "Well, I haven't been doing much of that for several years."
Getting bolder, I ventured, "Well, Lois, if you want help there, let me know." Silence. Dead silence. I though I had really messed up then.
Lois slowly looked up at me and said, "Help."

My heart raced at that. I was being asked for sex by my mother-in-law! This only happens in stories! Now all I needed was the "instant erection" and an 8 inch cock.

Shaking, I took Lois' hand and we walked to the living room. Nervously I kissed her, and found she was shaking as well. I kissed her neck and began removing her robe and nightgown. Her hands awkwardly roamed my body. She whispered that it had been 18 years since she had sex.

Her body was a bit dimply from fat and years, but her breasts still had body to them. Laying her back on the sofa, I began sucking her nipples and caressing her body. Her shaking became pants, and I began working my way down her belly. She had a full, red bush, and I started kissing it, prompting her to spread her legs. As she did, I moved down with my face right in front of her pussy. She was lubricating fast, and the aroma was intoxicating.

I moved forward, and began to lick her slit up and down. Lois moaned and completely surrendered. I licked her pussy, and settled on her clit. My tongue worked its way up and down on it. She responded by grinding her hips, rotating them to the pleasure she felt. After about five or six minutes of steady pressure on her clit, her breathing got faster, her hip movement more rapid, and her body tight. Lois came with a loud grunt, arching her back up and her legs jerking to the orgasmic spasms.

After this orgasm subsided, I asked her if she was ready. She nodded yes. I moved up over her, placing my 6 inch cock at her entrance. Lois reached down and guided me into her. It was all I could do to keep from coming right then. This was the first pussy other than my wife's I'd had in over 20 years. I slowly began stroking into her, speeding up to a good steady rhythm. Lois pulled me close to her where our pubes were pressed together, and she began another orgasm. I held out, and fucked her another two minutes, and she had yet another orgasm. This time I could not wait any longer, and let myself go into a wonderful, spurting orgasm into my mother-in-law's pussy.

We rested a minute, me on top of her, with her hands slowly running up and down my back. "Thank you," she breathed, "Thank you."
We cleaned up and went about a pleasant day after that.

Later that evening, on the same sofa, my wife commented on how "bright" her mom looked. "I haven't seen her like this in years and years. I guess those doctors have done their job well."

Oh, if the sofa could only talk!