Peter gives, then prepares to receive

Sally sighed and lay back in satisfaction. Her body glowed with the sensations after a good strong orgasm. "Sandy's been a good teacher, I see," she purred.

Peter raised his head from between his mother's legs, his face wet with his spit and her juices. "Thanks mom," he said. "You, um, you taste great."

Sally gave Peter a broad grin. "You know that thing about men and drinking pineapple juice?" she said. "I have my own secrets. Now come up here and let's chat a bit."

Peter slid up next to Sally. They lay on their sides, face to face. Sally stroked her hand down Peter's arm and shoulder.

"You're clearly not shy about playing with me, just the two of us," Sally said. "Do you think that would work for you at a party?"

Peter nodded. "It could. I think so."

Sally grinned. "That would be great. And you know Sandy's all for it."

Peter laughed. "Yeah. That first party she took me to. She was so eager to introduce me to you and dad and was really hoping we could play together."

Sally laughed out loud. "Zing!" she said. "We've come a long way since then."

"Yeah. I'm glad Sandy talked me into coming back to the parties with her."

"And I hope we will play together at the next party after you and Sandy get back from Europe," Sally said.

"Yeah," Peter said. "H-hope so. Yeah."

"You've been a champ," Sally said. "And very good to her." She squeezed Peter's shoulder. "So you've seen your father and I play with others at the parties now, more than once."

"Uh-huh," Peter said.

"What did you feel like when you saw Hank and your dad having intercourse at the party a couple weeks ago?" Sally asked. "Do you think you'd enjoy that?"

"Um..." Peter said. "Dad looked like he was having a good time taking it from Hank. So...maybe."

Sally laughed. "Quit fibbing!" she said, slapping him on the shoulder. "Sandy told me. Your secret is out."

"What?" Peter said.

"If you don't want this sort of thing to happen, don't pick a girlfriend who met your mom and dad at a swinging party before she met you," Sally teased.

Peter blinked. "What?"

"Oh, c'mon," Sally said. "I mean that she told me that you and Gary showed off for her. Both of you boys are chips off the old block. Sandy said seeing Gary giving it to you was like watching Hank fuck your dad at the party."

"Gary didn't want that to come out," Peter said. "I got him into it, really. I mean, he does it for me."

"Ho ho ho," Sally said with another broad grin. "Do you ever get to be on top?"

"Well, no," Peter said. "He wasn't interested."

"Hardly seems fair," Sally said. "I get to be on the top." She laughed. "Does Gary at least suck you?"

"Oh, yeah," Peter said. "He's pretty good. I like sucking him too."

"Good. Anyway, back to playing at the parties." Sally slid her hand down to Peter's cock and gave it a few strokes to firm it up. "That's better. Mmm. I do like being on top once in a while. With your father, if it's been a while or if he's in the mood."

"Hmm," Peter said, listening while his mother's deft fingers stroked his shaft and balls.

"So have you ever been on top for anal intercourse?" Sally asked, slowly stroking.

"Oh yeah," Peter said. "Sandy likes it a lot. I do too. I'd tried it before but she taught me how to make it good for her."

Sally grinned. Peter's girlfriend was probably passing along lessons from her anal experiences with Jim or with Sally herself.

Sally slid her fingers down to the root of Peter's cock. "Would you be up to showing off again, Peter, with me in Gary's place?" she asked.

Peter took a deep breath. "Yeah," he said.

"Just a sec," Sally said. She rose from the bed and slid into a two-strap hip harness, adjusting it loosely. She got out lube, towels and wipes and a thin rubber glove. She selected a large dildo with a realistic head and put a fresh condom on it. "Easier clean-up." Sally anchored it in the harness and tightened it up firmly, then did a slow twirl.

Peter laughed at her showing off. His mom, a fortyish blonde with a tall, slim, boyish frame, now sported an erection as big as Gary or Hank Menard and a good deal firmer. Her own naughty bits were strategically uncovered by the two-strap harness that perched its business end over her pubic mound and wrapped back around to each side, leaving the cleft of her buttocks and her pussy lips exposed. She turned back round to Peter, giving the dildo a familiar stroke.

"May I invite people in to watch us?" Sally asked.