Sex in her friends panties

[twistedtongue]

A few weeks back I met up with a lovely woman named Kath who is 55 (10 years older than me) with a great size 16 figure & lovely big tits. Since we got together we have been having regular sex, a couple of our early encounters I have already written about. Kath is bi-sexual & our romps have included a couple of other women but mainly it is just the two of us. However she is as horny as they come & loves sex, even though too much at her age does cause a few natural problems.
She indulges one of my favorite things which is to wear her panties & wank myself in front of her, filling them with my cum. I have always enjoyed this, doing it with my ex wife and with other lady friends. Last weekend, we went round a friend of hers from work, Karen. Me & Karen's husband watched the Cup Final whilst the women chatted in the conservatory. It was a pleasant afternoon. When we got back to Kath's later, she told me she had a present for me & took me up to the bedroom. From her handbag she produced a pair of lacy white panties & told me she had borrowed them from Karen's linen basket. She gave them to me & told me to wear them, I took the panties & noticed that the gusset was well stained where Karen had been wearing them the day before. I had a good sniff & smelt the aroma of Karen's pussy. I stripped off, my cock was fully erect & I pulled Karen's tight lacy panties on. Kath moaned at the sight of me & started to rub her pussy through her trousers. My cock barely fitted in Karen's knickers, but as always it felt wonderful wearing some panties that had been worn by a woman. Kath told me to play with myself & using my thumb & forefinger I gently teased my cock through the lacy front of the panties. Kath stripped off down to her undies & started to make herself very wet, using 1 hand on her cunt & the other to fondle her tits. She asked me to come forward & had a lick at the gusset of the panties I was wearing saying how wonderful Karen tasted. She told me to wank faster & imagine Karen was watching too, which I did & soon my cock was jerking in Karen's panties as I filled them with my cum. At the same time Kath, brought herself off with her fingers. She then pulled me on the bed & I eased my cock out of the top of Karen's knickers so I could give Kath a good shag. After I had fucked her for a while, she wanted to wear Karen's knickers, so I put them on her & continued to fuck her, so that my cum & her cum mingled into her friends white panties.
On the Sunday morning Kath went back to Karen's with the excuse that she had mislaid an earring & put Karen's knickers back in the linen basket. Whether she noticed that they were well stained when she went to wash them I don't know, but it certainly gave me and my new lover an evening to remember.