Rod couldn’t stop fast enough. We pulled into the rest area drawing a nervous glance from the woman we could see in the Audi.

“Shit” said Jen. “I almost forgot our own system” she said pulling a bright red sweater from under her seat and dropping it on the dashboard, bringing a relieved smile and wave from the Audi.

Walking over to the Audi, the woman introduced herself as Anna and explained that her husband and friends had joined the couple in the motor home. She was grumpy she’d drawn the short straw as lookout. She’d been left with instructions that anyone who wanted to join them should just go in, and that the windows on the other side of the motor home, away from the road, would have a good view.

We agreed to walk around the back and have a look, and it took seconds before Jen made up her mind to go inside. 5 mostly-naked bodies - 3 guys and 2 women - were in what looked like a group scene from a porno. One woman was giving a guy an expert looking blowjob while the other woman was on all fours, sucking one guy while being fucked doggy-style by another.  Jen was going in to “even the odds” in her words.

We could hear the muffled sounds of sex and pleasurable moans and we watched from outside as Jen walked in. Those inside looked around and acknowledged her, but barely missed a beat, carrying on with what they were enjoying.  Rod had his cock out, and had started stroking himself.

We heard a noise from the other side of the motorhome and Rod covered himself nervously. He relaxed slightly when he saw it was Anna but still kept his exposed cock hidden. Anna grinned, probably guessing what was happening, and stood between us, slightly in front, giving Rod some privacy. Her intake of breath when she looked through the window was audible.

“Fuck being look-out. No way I’m missing out on this” Anna said, almost to herself.

As Jen started undressing, the guy being sucked in the threesome moved to Jen. We couldn’t hear anything clearly but the guy stretched out a hand to shake, apparently introducing himself. Jen stretched out her hand dodging his, and grabbed his cock tightly, pulling him to her. He laughed uproariously.

“Typical Jen!” Rod laughed, stroking himself again, careful not to be too obvious. It seemed pretty obvious, but Anna didn’t seem to notice, or didn’t seem to care if she did notice. She’d come to a dogging event after all.

Jen did her best to keep stroking the guy as he finished undressing her. As she tugged his cock, he nuzzled her neck and played with her tits, before moving his mouth to her nipples and his hand between her legs. Jen cocked her knee, opening her legs to give him more room. We could clearly see he was fingering her with fingers curling up inside her.

Jen’s every expression, her open mouth, closed eyes and her head thrown back all suggested she was being pleasured expertly. She’d given up stroking his cock, which now waved to and fro as he fingered Jen increasingly furiously.  Very shortly Jen exploded with an intense orgasm, squirting on the guy's hand much to his delight. He turned Jen around and then turned them both around so they were facing the rest of the group, and he was behind her. He bent her over at the waist and Jen spread her legs and reached back between her legs, guiding him into herself. Her eyes closed in pleasure as he pushed into her from behind and he picked up a slow but powerful rhythm thrusting into her.

Rod was now really going for it on himself and I saw Anna glance at his cock every so often. She shifted closer to me. “You can touch me if you want.” she offered. “Please. I’m so fucking horny”.  It was almost a demand.

I moved her in front of me squarely facing the window. Standing behind her she jolted and then trembled slightly as I reached around her and fondled her boobs, bare under her top, squeezing her stiff nipples. She pushed back into me offering me her neck to kiss as she pushed her backside back hard on my painfully hard cock. She reached back between us to stroke my cock through my jeans.

We stayed like that watching as Jen was getting fucked from behind and the other two couples, who had swapped partners, were also fucking. One couple near the window was missionary style, her with legs high in the air, The other couple was in the far corner from where we stood. The woman was on top of a man reverse cowgirl watching the rest of the action, including us. She smiled naughtily and winked when she saw me clearly fondling Anna - Anna's friend from the Audi I guessed.

I turned Anna around and she unzipped my jeans, released my cock and she started to stroke it. I heard another vehicle pull up.

Meanwhile I saw Jen move towards Anna's friend kissing her, sucking her tits and then licking her pussy as it was being pounded from below, all the while being fucked from behind.

Anna dropped to her knees and took my cock in her mouth. I was fucking her mouth slowly when two young looking guys came around the corner of the motor home smiling. Anna tensed but I stroked her hair and told her it was alright. The guys were clearly in the know,  and kept their distance enjoying the scene outside and the one through the window. Both pulled their cocks out, stroking themselves without a care in the world.

Seeing this seemed to turn Anna on. She stood and pushed her top down exposing beautiful tits with large stiff nipples. Instead of kneeling back down she lifted her skirt and bent over at the waist displaying her ass and pussy to the newcomers and kept sucking my dick. No knickers. God bless you Anna, and god bless all women going commando.

She called Rod over. Rod stood by close, wanking, but didn’t join in. The young guys moved closer and she stopped sucking me long enough to tell them to put on a condom if they wanted to fuck her.  The taller of the two pulled a condom out of his pocket, rolled it on quickly and pushed into Anna from behind, unfortunately coming with a grunt almost just as fast. Anna waved off his apology. “The good thing about being young is you'll probably be ready again in 2 minutes! You know where I’ll be.” she said, with a giggle.

His friend did much better. With a shorter but girthy cock Anna had some trouble taking all of him, but after a while she was clearly enjoying him. She was unable to focus on sucking me, so I played my part holding her and helping her brace against his thrust, managing to do so with my hands on her tits and nipples. This had the added benefit that Anna could play with her own clit and after several minutes of hard fucking Anna came with a moaning shudder just before the young guy pulled out, ripped off the condom and shot a thick load over Anna's back.

Anna returned to kneeling in front of me, sucking me expertly. As Anna foretold, the other young guy was hard again now, and he and His friend joined me, standing in front of her. She took turns sucking us, stroking the cocks not in her mouth. It wasn’t long before each of us shot our loads on Anna's tits. Rod was happy watching and taking the odd picture.

A guy we assumed was Anna's partner was at the window watching with a huge smile, and passed a wad of wipes out the window. It was my pleasure to wipe her chest and backside clean, for which I was rewarded with a hug and a whispered promise of a great fuck if we ran into each other again. She asked for my phone, which I handed to her, and she called herself. “In case you need to get hold of us later” she said, giving my phone back and giving my groin a playful pat.

Meanwhile in the motor home it looked like everyone was either relaxing or starting to get dressed. Outside, we were doing the same. The young guys had already headed off and when Rod and I went to the Motorhome door Jen and her three new friends were coming out. We were introduced to Mike, Anna's husband and their friends Shelly and and Bill.

We jumped into Rod and Jen's SUV and the couple in the motorhome were waving goodbye to the Audi when two large motorbikes - 2 people on each - pulled in, both with red blankets strapped to the handlebars.