On the way home from Debra's, mother leaned sideways and put her head on my shoulder. Her fingers strayed to my lap and gently brushed over the bulge in my pants. She said quietly, "You know when you were about to head back home and I said I would make you're life a misery if you did."
"Yes."
She squeezed the bulge gently, "Well if you don't do something about my frustration soon, then I will."
Although Mother was quite small, she had a trim figure and nice legs and I had always regarded her as a pretty forty-two year old. A few weeks previously I had accidently seen her masturbating and once she got over the initial embarrassment, we had developed an intimate but not physical relationship. I had introduced her to hard porn and since then she had become obsessed with sex.
Initially I was the one in control but as her confidence continued to grow, the roles began to reverse and she was taking over.
Following the unexpected death of my father she had been without sex for two years and was desperate to be screwed properly. Her liaison with Debra's son some thirty minutes earlier had been a miserable disappointment.
So why had I not done something about it already? She was certainly making it plain that the opportunity was there and she admitted that she had been fantasying about me for years.
Was it because it made me feel self-righteousness? Was it a moral issue? It was probably some of both but despite my reluctance to give in to temptation, sex is sex and my mother had become very desirable. The question I was asking myself was; how long could I maintain the illusion of celibacy?
Okay so I had acquired an erection when she was watching herself masturbate in a mirror, but that had been just a lapse of concentration. Despite experiencing more than one erotic situation with her, it had been the only occasion when I had weakened.
I admit that I was aroused when she and Sue were enjoying their lesbian encounter and had my girlfriend not been occupying her pussy I would have screwed her without hesitation.
While all of these thoughts were turning over in my mind I became aware of some activity in the passenger seat and I looked sideways. I said sharply, "Mother what the hell are you doing?"
She had her dress pulled up and her hand inside her panties. She replied quite calmly, "You may have had a satisfactory afternoon but I have not. Sex with David was pathetic and I am extremely frustrated. The only reason that your dick is still inside your trousers is because you are driving and I want to get home in one piece. So ignore me and keep your eyes on the road."
I had to laugh. "Mother you are incorrigible and this has got to be a first. Son driving while mother masturbates in the passenger seat. Tell me when to honk the horn."
"You'll know, so now shut up because I'm busy."
I couldn't help but glance sideways a few times and when she realised that I was peeking, she deliberately made it more interesting. She pulled her dress up high enough to expose her bare stomach and down came her panties. Then she opened her legs fully so I could get a complete view.
Then came the enticing commentary, "Mm, this feels really good and I'm all wet and tingly. I could come right now but I'm going to tease myself for a while. Don't you wish you were doing it for me?"
I wanted to keep my eyes on the road but out of the corner of my eye I could see her fingers sliding in and around her pussy. The scent of her juices pervaded the car and she was squirming with exaggerated pleasure. She was deliberately trying to excite me, and she succeeded.
Desperately I told my penis not to pay any attention but it failed to listen. Slowly it began to rise and there was nothing I could do about it.
She was triumphant. "Well I never; Mummy's got Anthony all excited." She reached across and gently gripped my erection through my trousers. "My word, you've certainly grown up to be a big boy and sooner or later I'm going to make use of this monster."
I slapped her hand away and I said sharply, "Well not today you're not, so let go of me and finish what you're doing. I just want to get home safely."
I was furious with myself and despite all my good intentions, my mother had made me horny again. I wondered how long I could resist because her persistent approaches were breaching my defences.
She had her fingers back in her pussy and said breathlessly, "If only you knew what I'm doing to you in my imagination. I'm not going to tell you but it's certainly going to make me come."
I tried not to imagine what fantasy she was performing upon me but whatever it was, it was not diminishing my erection.
Her head was turned towards me and she was making little whimpering sounds but suddenly she stiffened and her whimpering became a desperate groan. Her right hand was rubbing furiously and she thrust the fingers of her left hand deep into her pussy.
I heard her suck in her breath and without making any sound at all, her bare stomach jerked convulsively as shocks of agonising pleasure jolted her body. Then she exhaled with a long shuddering gasp.
As the delicious sensations began to fade, there were milder spasms until eventually she relaxed and settled back into her seat.
Within a few seconds she had recovered and reached down to pull up her panties with a cheerful, "Well I feel better for that; so how do you feel?"
Of course my penis was still rock hard and there was little point in trying to hide it. I said nothing and stared fixedly ahead.
She finished straightening her clothes and looked at my lap. "Oh dear Anthony, you still seem to have a problem. Do you want to pull over and let me make that nasty swelling go away?"
She reached out murmuring soothingly, "Let me give it some air because it must be suffocating in there."
Before she could reach my zipper I snapped, "Don't touch me; it will eventually subside of its own accord. Anyway it would almost certainly be a traffic violation."
She was smirking as she remarked, "My word you are getting crotchety. It's not my fault you got horny, you shouldn't have been watching."
I replied sharply, "I was not watching but when someone is playing with their pussy only a few inches away, it's difficult not to be aware of it."
I continued, "But it won't happen ever again because by tomorrow there will be a notice on the passenger side that will say, 'Thank you for not masturbating'."
We eventually arrived home and while I was showering I assessed the situation. Although I was losing the upper hand there was one thing of which I was absolutely certain. She could not force me to fuck her; or could she?
The next day I was leaving for a five-day training course. I was not expecting to do well because the only talents that I possess involve drinking beer and fornicating.
I rarely saw my girlfriend on Sundays but because I was going to be away for the week, we had agreed to make an exception.
Sue and I had been together for eighteen months and sex was the main theme in our relationship. It was without any restriction no matter how devious or perverse and we trusted each other implicitly. We even agreed that extracurricular sex was permissible as long as the other was aware of it in advance.
