A week had passed since the events in the backyard, and Friday morning found Hal once again sitting in the kitchen sipping his coffee. Carol had taken a phone call nearly 20 minutes ago and was still in the den having a hushed, but seemingly serious, conversation with someone. Gavin had finished breakfast just a few minutes earlier and had gone upstairs to take his medication for the day, leaving Hal alone with his thoughts.
And there was plenty for him to think about. It had been ten days since he'd arrived home to find Gavin, he and Carol's 18-year-old son, grudge-fucking her in the living room. The apparent dual-betrayal had in reality been nothing more than the unusual side-effect of a depression medication Gavin had just started on. The meds, shortly after ingestion, turned him into a sex-crazed animal of a man who would fuck anyone he pleases, including his own mother. Then as now, Carol saw it as her parental duty to usher their son through this pesky side-effect, and every day since had been sating his hyper-virile desires with intense sex "sessions" that could run as long as eight hours.
At the end of these sessions, Gavin would slowly revert to his normal self with no memory of what (or whom) he'd done. That was well-enough for Hal and Carol, who had early on decided to shoulder the responsibility for both managing their son's hyper-virility and of keeping the secret of how from him.
In fairness, Hal really didn't do any of the heavy lifting when it came to handling Gavin. It was Carol who would fuck him for hours on end, and Hal's task was generally just to listen without going insane. That had become somewhat easier for him over the past week, as the sound of his wife getting plowed by their son and his monster cock had become so common it barely even registered for him anymore. If anything, though he'd never admit it to her, listening to Carol's moans and grunts and frequent screaming orgasms was becoming a major turn-on for Hal.
That part was a bit troublesome, though, as Hal and Carol's own sex life was still majorly disrupted by her "helping" Gavin. Fucking their son had become like a job to her, meaning she had very little left in the tank for her husband. They'd fucked only once in the past ten days; a quick affair that had ended with Hal blowing his load long before Carol had any chance to have an orgasm of her own. Hal could hardly feel guilty about that, though, considering the frequency and intensity of the orgasms she was getting from Gavin's beefy dick.
In the other room, Carol could be heard wrapping up her phone call. Moments later, she returned to the kitchen, a concerned look on her face.
"Did Gavin go up?" she asked, looking around for him.
"A few minutes ago," said Hal.
Carol sat down at the kitchen table where her oatmeal was now sitting cold.
"That was Brenda. Apparently, after Gavin and I left there yesterday, she fell asleep without cleaning herself up. When Teddy got home, he saw all the cum on her and assumed she had cheated on him with a group of guys. He was only partially wrong, of course," said Carol, taking a bite of cold oats.
In the week since the incident in the backyard, Gavin and Carol had gone back to Brenda's several times so that she could "help" with Gavin's side-effect. It had offered Carol a bit of welcome respite from handling their son's daily sessions solo.
"Damn, sorry to hear," said Hal.
"I think they'll work through it," she said with a little frown, "selfishly, I'll miss having an extra hand with Gavin, though I won't miss some of the things he tried to make us do."
Hal nodded knowingly. Carol had not given him nearly as many details about the sessions at Brenda's as he'd have liked, but she had shared that, at Gavin's insistence, she and Brenda had done a few "girl-on-girl things" with each other. Some kissing, touching, and even some pussy-eating, all of which Hal would've paid good money to see.
Carol finished her oatmeal and brought her bowl to the sink.
"I better get up there before he comes down and bends me over the table again," said Carol, heading for the stairs. Hal was continually struck by the content of the conversations between him and his wife these days.
"Do your best to keep it quick, remember I need him to help with my mom later," said Hal. Hal's mom, Lorraine, was moving out of her house and into an apartment that afternoon, and Hal had taken the day off work to help, along with Gavin.
Carol simply nodded in response and left the room. Hal knew there was only so much she could do, but as long as the session didn't take much more than four hours (the current average) they'd be able to make it to his mom's in time.
Hal moved to the couch to kill some time scrolling on his phone. Within minutes, the sound of Gavin's headboard thumping rhythmically against the wall signaled that he and Carol had started their session.
"Hm," mumbled Hal with a quizzical look. Usually Carol started by blowing Gavin, but by the rocking noises of the bed they'd skipped right to fucking. Gavin must be in a mood, thought Hal.
In short order, pleasured moans (mostly Carol's) and even the muted slapping of skin on skin joined the thumping of the headboard to create the soundtrack of incestous fucking that had filled the house for over a week, now. Hal had grown used to the sounds. In a way he wouldn't admit but couldn't ignore, he had even grown to enjoy them. He knew he should feel shame or anger or any number of other earned emotions, but the truth was that his dick was hard for most of the morning just from listening to his wild stallion of a son shtupping his sexy wife.
With all the fucking happening in his proximity lately, Hal's own libido had skyrocketed. He only made it half an hour or so of listening before, inadvertently, he was rubbing his own throbbing erection through his jeans. His mind was conjuring images of Gavin's thick meat-pole buried in his wife's cunt. He could hear Carol's moans, little yelps and squeals, and he was powerless to resist.
Hal sat on the couch and unzipped, wrapping his fist around his hard-on and stroking it. He pictured Gavin's sweaty ass pumping away, Carol's big tits bouncing. He jerked faster, picturing Carol's face, the little grunts and groans she made when she was close. He imagined Gavin slamming his hips into her, his balls slapping against her asshole, and Hal groaned. He closed his eyes and imagined it was him up there, fucking his wife senseless with a cock that was half again as big as the one he was currently holding.
Hal wondered, in passing, for about the thousandth time in two weeks just where in the hell Gavin had inherited that huge slab of cock from. Intermingling jealousy and pride wrestled inside Hal, both happy to know his son was hung like a donkey and irritated that he, himself, was not.
"It sure as shit didn't come from my side of the family," Hal thought, picturing his own unremarkable cock. Were Carol's family, his in-laws, all hung like goddamn Clydesdales? He thought about Carol's dad, a hard-ass named Frank, and her pervy brother, Tony. Those two were pretty big pricks themselves, maybe their actual pricks matched their personalities? Maybe Carol would know; she had grown up in the same house as those two.
