Ever since I was a boy I had always taken my mother a cup of tea in bed on Sunday mornings. Then I'd sit on the edge of her bed and chat to her while she drank it, and afterwards I'd take the empty cup and saucer away and she'd go back to sleep.
I must admit that, apart from being a dutiful son, I enjoyed looking at her half-revealed body as she sat up drinking her tea - her nightdresses left very little to the imagination, and I was often treated to a glimpse of a naked breast, as well as feasting my eyes on her bare arms and shoulders.
And so it was one Sunday morning in my late teens: my mother was sitting up as usual, the bedclothes pushed down below her waist, and I could see her nipples poking against the thin cotton material of her nightdress. It was very low-cut, and one strap persisted in slipping off her shoulder to briefly expose even more of her breast before she hoisted it back up into position.
I don't remember what we talked about - most of my attention was focussed on her body, but then after she handed the cup and saucer back to me her pillow slipped off the opposite side of the bed. She squirmed over to retrieve it: the bedclothes slid down even further, and I saw that her nightdress was rucked up, completely exposing her bare bottom.
Almost without thinking, I gave it a playful slap, but perhaps harder than I intended. My mother's body went rigid: I saw her fingers clutch the sheet, gripping it until her knuckles whitened, and then she turned back towards me, a strange unseeing expression on her face.
'Mum - I'm sorry - I didn't mean ...' I began, afraid that I'd hurt her, but she interrupted me, almost as if she hadn't heard me.
'Spank me! Spank me properly!' she whispered, and before I could answer she threw back the bedclothes completely and crawled across my lap, dragging her nightdress up around her waist.
I rested one hand on her bare back, staring at her naked backside with my other hand on the backs of her thighs, and then I brought it down sharply on her bottom. Mum gave a little cry, and I felt her body shiver, and then I spanked her again. I don't know how many times I smacked her quivering buttocks, but soon they were glowing red, and my mother started to moan uncontrollably.
Suddenly her body began to jerk, and I stopped spanking her, instead letting my hand caress her bottom. Mum was gasping, and she struggled up beside me.
'Hold me, darling!' she cried, and I took her shuddering body in my arms while she clung to me as her orgasm flooded through her. The strap of her nightdress had slipped down again unheeded, and I was unable to resist cupping her naked breast in my hand, fondling it as she turned and buried her face in my shoulder.
At last my mother stopped shuddering, and her breathing gradually slowed to normal. She smiled at me uncertainly, and stroked my face, and then her hand dropped to my groin. I was wearing just the trousers of my pyjamas, and Mum slipped her hand inside to grip my throbbing penis.
'My poor darling,' she whispered. 'Doing that to me made you excited, didn't it? I'll take care of you, dearest,' and with that she started to rub me slowly. My right arm was still around her, while I continued to fondle her bare breast with my other hand as I looked down to watch my mother's hand sliding up and down my rigid cock. I held back as long as I could, but soon I felt myself losing control.
'Mum - stop it! I - I'm going to come!'
'It's all right, darling,' she whispered, and then a great jet of my semen shot up and landed on her throat. She gasped as my semen continued to spurt over her body, and then she turned her head to kiss me passionately on the mouth as I gripped her naked breast, sinking my fingers into her soft flesh.
My mother kept rubbing me, her mouth working on mine, until my cock gradually started to soften. She still fondled me for a few minutes, then gently drew back.
'I think you'd better go now, dearest,' she said, and removed my hand from her breast. She carried it to her lips and kissed it, then smiled at me.
'Please go, darling, before ...' she didn't finish the sentence, but she released my hand and moved away from me. I didn't know what to say, but I got to my feet and went to the door. I looked back at her briefly, just in time to see her pulling her nightdress, soaked with my semen, over her head, and I was able to see my mother's completely naked body.
I showered and shaved, made myself some breakfast, and then went for a long walk, re-living every moment of what had happened. My mother was still in bed when I got back: her door was locked when I tried it, and when I called out asking her if she wanted anything she just said she wanted to sleep.
It wasn't until the evening that I saw her. She moved stiffly as she prepared dinner, and when we sat down together I heard her catch her breath, then wriggle uncomfortably on her chair.
'Mum - I'm sorry if I hurt you,' I said, and she smiled.
'It stings a bit, and I'll be sore for a few days, darling - but it's lovely!'
She squeezed my hand across the table. 'Now you've discovered one of my vices - but we mustn't make a habit of it - although perhaps now and then ...' Her voice trailed away, and she squeezed my hand again.
'Did you like doing it to me, darling?'
I hesitated. 'At first I was a bit afraid of hurting you, but then looking at your bare bottom, and feeling it ..' It was my turn not to finish a sentence, and Mum caressed my fingers.
'It can become addictive - I should know, I've loved it ever since ...'
'Ever since what, Mum?' I asked.
'Oh - when I was a girl ... Dad was working in America, and Mum went out to spend a few months with him, and I went to stay with Uncle Jon and Auntie Sue. I was growing up, and I often caught Uncle Jon looking at my legs and my body - I didn't mind, I liked him looking at me.
'One evening after dinner we were all washing the dishes together, and I dropped a plate. It smashed on the floor, and Auntie sighed in exasperation. "That was one of my best plates," she said. "If you weren't a big girl I'd get your Uncle to spank you!" "I don't mind being spanked," I said, "I deserve it!" I was really just thinking about him looking at my bottom, and feeling his hand on it, not about being spanked.
'I saw Uncle and Auntie looking at each other, and then Uncle said "Come on, then," and we all went into the living room. Uncle sat on the sofa, and I lay across his lap, and I felt him pull my skirt up. "Take her knickers down, and do it properly, Jon!" Auntie said, and I noticed that her voice sounded funny, somehow. I wriggled to help Uncle to get my knickers down, and I discovered that his dick was hard when I accidentally rubbed against it, and I started to get excited.
'Then he started to spank me - it stung at first, and then it felt wonderful. He spanked me for a few minutes, and then he let me up. I was disappointed - I wanted him to keep spanking me, but then Auntie told me to go and rub some cream on my bottom to stop it stinging. She winked at me and told me that he spanked her too, sometimes, and she knew what it felt like.
'I went upstairs and did as she suggested, and when I came down again I saw them both sitting on the sofa, and Auntie had got Uncle's dick out and was rubbing it. They didn't see me, and I crept away. Then a couple of nights later I heard smacking noises coming from their bedroom, and I could guess what was going on.
'Every Thursday evening Auntie went out to play bridge at a club she belonged to, and the following Thursday I took my knickers off and then went to my Uncle and asked him to spank me. This time it went on a lot longer, and it was lovely, and then I told him I'd seen what Auntie did to him, and I asked him if I could rub his dick too. He let me, stroking my sore bottom as I rubbed him. He told me to get a cloth from the kitchen, and it was wonderful, making him come like that.
'Afterwards, he spanked me often, sometimes when Auntie was there, and sometimes when we were alone, and when we did it on our own together I rubbed him afterwards and made him come I loved that!
'And then late one night Auntie came into my bedroom, wearing just her nightie, and she asked me if she could spank me. I thought for a moment and then said yes, and then she took her nightie off and asked me to do the same, saying she wanted to feel our bodies together with nothing on. I let her feel me all over, and I felt her too, and it felt nice, and then she started to spank me. It was different from when Uncle spanked me, feeling us both naked like that, and then she kissed my breasts, and I kissed hers, and then she spanked me again, and put her hand between my legs.
'Suddenly I saw Uncle standing in the doorway in his pyjamas, watching us. Auntie saw him too, and she carried on spanking me for a bit, and then she went to him and put her arms round his neck and rubbed her body against him, and whispered something in his ear. She was still naked, and she didn't bother to pick up her nightie when they went back to their bedroom, and I heard her moaning and crying while Uncle - did things to her ...'
I swallowed, thinking of my mother's naked body and her soft bottom, and wondering how many men - and perhaps women too, had spanked it, but then she took her hand away and changed the subject, looking embarrassed and saying that we mustn't talk about it any more.
Over the next few days I tried to touch her and kiss her a few times, but she wouldn't let me. Then one evening we were in the kitchen together - she'd just had a bath, and had on a housecoat she often wore. I was pretty sure she was naked under it, and on impulse I pulled the hem up before she could stop me. Sure enough, she wasn't wearing any knickers, and I slapped her bare bottom, hard.