[Start part 9, all characters are 18+]
Just then Tyler realized he heard the cabin door open, the sound of footsteps and of the drop of metal car keys onto the counter.
Sue was in such an altered state she was oblivious to the sounds of the cabin door and footsteps, but the unmistakable and sharp sound of the car keys landing on the Formica counter startled her into awareness. She opened her eyes to the sight of Tyler's red sweating face in a look of terror as he quickly moved his body off of hers, into a sitting position beside her on the couch with both forearms locked over his still hard penis.
"What the..." Dan said as he looked at this incredible and unexpected sight.
Sue propped herself on her forearms and elbows and stared at Dan with an expression of mock outrage, "Look buster, there's only one person right now who is violating camp rules, and it's not Tyler or I."
Tyler just blinked in incomprehension.
Dan's eyes were locked onto Sue's. The serious look on his face lightened, he gave a quick nod and said, "Fair point." His face transformed into a smile and his hands began to unbutton his shirt.
"That's a good boy," Sue said, almost as though she were Dan's mother too. "All clothes come off," she added.
Dan did as he was told and when he removed his underwear they could see his cock was raging and erect.
Dan sat down in the chair opposite the couch, and started to touch his penis.
Dan looked at Tyler and said, "Son you were, as I recall, licking your mother's breast and you had your finger inside her pussy. She seemed to be enjoying that, now be a good son and go back to pleasing your mother."
Tyler's mouth was agape, it felt like his logical brain was working at ten percent normal capacity because nothing was making sense, the fear he felt just a moment ago had impacted his penis too, becoming more flaccid and smaller, he just sat there frozen.
Sue smiled and as she lifted herself up into a sitting position next to Tyler said, "As much as I was enjoying that, we can also move onto other things."
Sue reached down, and softly grabbed her son's shaft, and started gently stroking it.
In an instant, Tyler's cock was completely hard again.
"Kiss me", Sue instructed.
Tyler and Sue began kissing passionately again, as Sue jerked her son's penis, and after a minute Tyler remembered to return the favor by reaching over and having his fingers play with her clit again.
For Dan, it was quite a show and he took a break from stroking his penis because he didn't want to blow his load so soon at this incredible sight.
Sue shifted her body onto all fours and lowered her face toward Tyler's cock.
"This is something I've been wanting to do, son." And her lips planted a soft and loving kiss on the tip of Tyler's penis.
"Ohhh" Tyler let out of his mouth, unconsciously.
His mother slid her mouth over the head of his penis, sucking it and opened her eyes to look up at him.
"Open your eyes and watch your mother suck your cock," Dan demanded, sternly.
Tyler obliged and the eye contact between mother and son was so powerful, the love between them was so strong and on so many levels.
Sue's mouth pushed down, she was skilled at deep throating but only went about halfway, both because her son penis was quite large, and because she didn't want to risk gagging and interrupting this incredible moment.
"Oh mommmm," he said. Tyler knew he couldn't take this for very long.
Sue sensed too what was about to happen, as her son's body had tensed all up and he was starting to quiver. She took her mouth off just for a quick second to say, "Give mommy your sperm son, cum in my mouth, I want to taste you!" And her mouth plunged down his shaft again.
"Arrrggghhh" Tyler nearly shouted as his penis blasted shots of his semen into his mother's mouth. Dan could see it dripping down the corner of Sue's mouth, it was so hot that he was about to cum too.
Sue felt Tyler's pulses of slippery warm cum shoot into her mouth and she began to swallow while keeping her sons penis in her mouth. His cum tasted distinctive to her, a bit sweet and salty, different somehow to Dan's. She felt so naughty and so hot, drinking the sperm from her son's penis, almost as though she was swallowing potential grandchildren - it was a sick but naughty and exciting train of thought in her mind all at the same time.
As amazing as Tyler's orgasms with Cathy had felt, ten times better than stroking his own cock, cumming into his own mother's mouth, with her sucking him down like she was so hungry for his cum, was the most incredible feeling and sight of his whole life up until that moment. And just then both Tyler and Sue felt some warm liquid landing on their bodies, from Dan's exploding cock. Dan wasn't trying to do this and his eyes were now closed as he climaxed from touching himself to the incredibly hot sight of his wife sucking down his son's cum.
Sue removed Tyler's cock from her mouth to look at her husband and say, "Ahem..."
Dan looked up and realized what he'd just done and he said, "Oh! Sorry about that." Then he and Sue began to laugh, and Tyler laughed too. Sue ran her fingertip on a spot of cum on her arm from her husband and extended her tongue to meet her fingertip and swallowed.
"Son's cum followed by his dad's, I'm a lucky gal," Sue said and smiled.
Tyler and Sue returned to their glasses of lemonade and gulped the rest down.
Tyler grimaced.