I am a straight man that enjoys wearing and masterbating with womens knickers, I like nylon ones mainly. My wife knows and has no issues with it, and on occasions she enjoys watching me in hers.
Anyway, my mum-in-law moved in with my wife and I 18 months ago. She is 49. I could not help noticing her knickers hanging on the line, nice nylon and mesh ones. One day when I was home alone I went through her knicker drawer, what a lovely collection she had. I tried a pair on and became instantly hard, a quick hand job, all done and knickers in the laundry and thought no more of it.
About a week later my wife was away on business for a few days, mom-in-law said she was going out with friends. So when she left, there I was going through her knicker drawer and to my horror she had returned, apparently forgetting something, and she was watching me. Fortunately I had my trousers on still. She called me a pervert and said she would talk to me later, and off she went.
I went out the next day and when I returned she was there, she threw a pair of knickers at me saying I guessed you had been playing with my knickers, as she went to do the laundry and found her knickers all wet and sticky. I was red with embarrasment. Then to my amazement she said she didn't mind as long as she got a perk out of it. I asked what she meant and she replied she wanted to get off. She said come to her room in fifteen minutes.
I went to her room and she was on her bed in some lovely nylon knickers, she had quite small tits and they were a little bit saggy. She said take your trousers off. I did, and my cock was semi hard but moist. She sat up and pulled my pants down and he sprung to life. She took her knickers off to reveal a tiny amount of black pubic hair. She said I'm ready. I have been warming myself up for the last ten minutes.
So I rubbed her pussy and found it very wet, she starts to moan and shudder. I pushed two fingers up her and fingered her in and out. At the same time she grabbed my cock and wanked me expertly. I ejaculated and she lets out a loud moan as she comes on my fingers, squirting out some juice.
She thanked me and asked me to leave. Anyway, half and hour later she said use my knickers whenever you want but I will have to repay her with sexplay, no kissing, so I agreed. I get to wank in her knickers and she cums on my fingers.