"So then Steve suggested we try... anal sex".
Charlotte let a wicked smile steal across her face and turned it slowly round the room.
There was a mixture of responses -- some couldn't suppress a giggle, others tried to maintain a poker-faced composure, although a flicker of reaction had already given them away.
Happy that everyone wanted to know more, Charlotte continued.
"Well, I said... yes! Definitely. I'd be really keen to try it!" She turned to Steve, still smiling. Steve was blushing a deep red and didn't seem to know quite where to look.
"I said... it's really brave of you to ask me for it, Steve. I really respect you for plucking up the courage, and I'm sure you'll enjoy it as much as I will!"
Charlotte looked deep into Steve's eyes as she said this, and reached her hand out to cup his chin.
More embarrassed than ever, Steve cast his eyes downwards, unable to meet her gaze.
Charlotte ran her fingers through Steve's hair, tenderly and slowly. "There, there! It's OK darling, you don't mind me telling everyone, do you?"
She addressed the dinner-party guests again, who were hanging on her every word.
"Steve was a perfect gentleman -- he insisted on buying me something extra-special to wear, just so I'd feel my sexiest. I told him the sort of thing I liked, and he scampered off to get it. When I unwrapped it, he asked me if I liked it.
"I had to tell him that I did, but but it was a little on the small side! He was an absolute darling and took it back and explained everything to the shop assistant, and he said she laughed when he told her, but she was happy to swap it for the size up.
Charlotte paused and savoured a mouthful of Rioja, twirling the glass stem between crimson fingernails as her rapt audience awaited more juicy details.
"Thursday night, we agreed. I had a candlelit soak in the tub, then Steve rubbed my feet for quite a while and he did a marvellous job, which always, you know, gets me in the mood. Steve had bought a bottle of lube as well, and so he put some on his fingers and I told him to make sure it was well worked-in, because I've heard that can be quite important!
"I watched him get one finger in up to the knuckle, then with a bit more lube and a bit of practice we were up to two fingers, weren't we darling?"
Steve was purple with deep shame at his wife's spilling the beans on the ins and outs of their sex life.