Several pleasant days leading up to a jack-and-jill-off together.

Over the next few days, Gary and Lil were over at Joyce and Bernie's house more than their own. Nude inside and outside, following Joyce's house rules, they went swimming in the pool, sunning on the patio, and, for Gary and Bernie, rocking her bed with joyous fucking and other sexual explorations.

"I'm so glad I saw you and your mom together," Bernie told Gary. "It's really opened a door for us."

"Mmm," Gary said. He and Bernie lay on a towel on her bed, legs pulled back, butts close together, in the same position that Bernie had caught Gary and his mom Veevee in, in the back of the Super Surf Van. Gary's gloved middle finger penetrated Bernie's anus while she stroked her vulva. Bernie did the same for Gary as he stroked his penis.

"Move your finger in me, faster, I'm going to come," Bernie said. "Oh, Gary, yes, EEEEE!"

Gary held off coming. He eased off Bernie's finger and gently withdrew his own, then stripped off his glove and mounted her while she was still coming, thrusting in with a single deep stroke. Their voices rose together as he shot off deep inside her pulsing cunt.

Meanwhile, between Lil's part-time work shifts, Joyce had been working one-on-one with Lil on exercises from the chapter in Joyce's book on advanced female masturbation techniques. And on a little extra credit.

"This is really amazing," Lil said.

Joyce laughed. "I think you're a natural, Lillian," she said. Joyce reclined on a towel covering a yoga mat. Lil knelt between Joyce's legs, a gloved hand inside Joyce's vagina to the wrist. "And I like your new haircut."

"Bernie picked it out for me," Lil said. She'd gone from shoulder-length to a much shorter look, a sharp-edged golden cap down to her ears.

"Now let's have you go through the different motions again," Joyce said. "Oh yes. OH yes. Oh my goodness, Lillian, YES!" Her face and chest flushed deep pink. "AHHHH!" Joyce cried out. Her head curled forward and dropped back. Her hips and shoulders bucked, giving her generous curves a good shake.

Lil laughed as Joyce rose to another orgasm. "Ha-ha, yes!"

They spent several days like this until the night before Joyce was due to travel to host a Pleasure Circle on the other side of the country. She'd spent part of the early evening in a teleconference with her co-facilitator Betty, who was already hosting some preparatory work and setting up the venue.

Now the four of them sat nude around the patio table, finishing another dinner in the still-warm evening.

"If everyone's done?" Joyce asked. "Well, let's tidy up our plates and wash up." She looked at the others, their fingers and chins smeared with savory juices from the finger-food dinner. "And after that, you're all invited to join me in masturbating together. I want to make an early night of it before tomorrow's flight."

During the washing-up, Lil and Gary looked at each other.

He raised his eyebrows. "You think?" he said.

"Yeah, sure," Lil said with a laugh.

Twenty minutes later, Joyce, Bernie, and their guests were draped on various pieces of towel-covered living-room furniture, each with lubricant and wipes in easy reach. Joyce and Bernie had their favorite toys handy, and Lil had two of her own that she'd just acquired this week -- a vibrator and a slim dildo with a flared base, versatile in its application. Gary and Lil sat across from Joyce and Bernie. The sister and brother, novices at masturbation in company, looking across at the mother and daughter who masturbated together regularly, and frequently shared their pleasures openly with larger groups of women at Joyce's Pleasure Circles.

Joyce was generous with affirmations, suggestions, and encouragement, as well as verbal appreciations of how sexy it was to see Gary and Lillian pleasuring themselves.

Bernie watched the others through narrowed eyes, already half-lost in her own world of pleasure, her breaths coming fast and deep. Bernie stroked her fingers through the deep furrow of her labia under her full dark bush.

Lil was moaning in a high little voice as she rose toward her own orgasm. A little jolt from Lil's vibrator sent her over the top. She moaned and sobbed with pleasure as she reached her peak.

Gary felt the base of his cock twitch as his sister got herself off next to him. "Oh Lil," he said.

"So beautiful, Lillian, so beautiful!" Joyce said.

Gary looked round to see his sister's toes curling as she vibed herself to a second climax. Her pussy lips were bright pink and swollen open. His cock twitched again.

A little melody played somewhere in the distance, the ringtone for Lil's cellphone. It repeated twice and subsided before Lil came down from the heights of pleasure.

Bernie's quick, deep breaths changed to hoarse panting. Gary looked at his girlfriend to see her thrusting a dildo quickly in and out of her pussy, her ruddy pussy lips being tugged in and out by the friction of the thick dick. The fingers of her other hand were poised on her swollen clitoris.

With a click and a buzz, another vibrator turned on. Joyce had put a blunt-tipped attachment that stuck out sideways from the ball-shaped head of her loyal wand vibrator and covered it with a stretchy glove and lubricant. The blunt tip was now vibrating inside Joyce's ass. In a very short time, the penetrating vibrations had taken Joyce up and over the top. She called out loudly, her brassy voice filling the room with an outcry of pleasure.

Gary's cock twitched, swelling in his stroking hand as he rose toward his own peak. An annoying tone sounded from behind him. Gary's own cellphone was ringing. He reached back, trying to silence it, distracted by his own arousal and the sounds of women climaxing on either side.