Setting up

With the tree decorated, they could no longer put off dealing with the giant Santa. Peter begged out on account of being old (which just drew accusations from everyone else about how he knew the whole thing was giant and heavy, but all Peter had to say was that their mother would expect it to be out when she got home and everyone grudgingly rock-paper-scissored to decide who got to lug it out). And so Matt and Michelle ended up suiting up in winter clothing, whilst the rest took a breather watching TV, with Peter having turned it on while they decided, the remote having morphed from a dildo to a fleshlight which he then began fucking himself with to Matt's shock (no one else seeming to notice an object literally transforming in full view). Despite looking around for it, Matt couldn't find any added bits to cover his exposed dick, and Melissa didn't seem to be worried about it, or that her own outfit left her cunt bare, other than telling him to hurry up. The pair each took one end of the sat and headed out the front door, leaving Mary bouncing on her dad's cock (she had taken over from the remote, Peter not seeming to notice it morphing off from around his dick, almost seeming to stretch to stay in his hand before snapping back to a normal plastic shape, as he quite casually threw it on the coffee table and used his other hand to aim himself into his daughter's muff as she sat on him, with Clair sheathing Brain's cock as well as they sat down).

Matt was relieved that his dick didn't feel cold. It was odd. He could tell it was cold; other areas felt it, and he could feel wind on his swinging dick, but it didn't feel bad like it should have stepping out in sub zero temperatures with skin exposed. As they stepped off the porch, it stopped mattering anyway, as suddenly the crotch of the pants were back as per normal, as was the bottom of Michelle's winter clothes. Matt had no idea why, but they did the entire job of setting up the Santa in front of the house completely normally. After wrestling the ornament into place, they had to fiddle with the wiring for a bit, and as they were finishing up, Sarah's car pulled in. She waved at them through the window as she passed by; Matt noticed she seemed to be bouncing up and down independently of the car, but couldn't tell too well through the windows. As was her habit (her car was the most often used), she parked in front rather than driving around to the back, backing in so she had the shortest path possible to the door. Finished, Matt and Michelle came over to give her a hand with some last minute items. She got out, her dress (Sarah would never wear pants to work, hence why she wanted to be able to get inside quickly) caught loosely on something, and then as she turned to walk into the house Matt saw it come free to reveal a leather dick sticking straight up from the chair where she had clearly been sitting on it fully impaled beneath the dress, glistening lightly from his mother's juices. As Sarah grabbed a few items, Matt saw the dick shrink back into the seat, leaving it looking totally normal. They all filed quickly back into the house, Matt paying close attention as they did, and as they passed onto the porch, suddenly he felt his dick free again. Michelle's crotch became bare again too as she entered the porch behind him. As an engineering student, Matt liked to think he had an analytical mind, and, since the porch had solid waist high fencing, he filed 'only when not in public view' as a possible factor in the back of his head for later consideration.

Now that Sarah was home, it was time to make the traditional family Christmas eve dinner. In years past those helping out with it had been decided by rock-paper-scissors, but since Clair and Matt were away at college the rest of the year and thus not helping around the house, it fell to them to help while they were here. So while the younger siblings goofed off, which involved video games and them fucking each other to make the x-box work, a sight Matt regretted not being able to see more of, the older siblings joined their parents in the kitchen. Matt was on veggies, while Clair was assigned to getting the meat ready. After pulling out all the food, Matt got out the knives and graters while Clair grabbed the tenderizing hammer (which she always seemed to swing with relish). After giving the pair instructions, Sarah and Peter went over the oven, talking about preheating it. Matt saw Peter reaching down and beginning to pull up Sarah's dress, and pointedly made sure to look elsewhere, as he had no desire to see his dad fucking his overweight mother. "We need this at temperature by the time she's done with the meat," Sarah told Peter, "So no slacking off." Peter grunted, and after a second there was a distinct smacking sound as he thrust into her hard. The over clicked but didn't catch, so he pulled back and slammed her even harder, and this time Matt heard the burners start. And he cut veggies, trying to ignore them, they kept fucking, quickly but firmly, as Clair cut and began beating meat in her own way.

"Is it about up to temperature?" Clair asked, completely oblivious to the fact her parents were fucking just beside her, close enough she probably occasionally got hit by Peter on his out stroke.

"Just a couple AHHH more minutes," Sarah replied.

Just then there was a knock at the back door, and I welcomed the excuse to get away and went to see what it was. When I opened the door, Brandon was standing there, holding presents, dressed a light jacket and with his dick pointing right at Matt, though he doubted Brandon could even see him around the boxes. "Hey Brandon," Matt said, stepping to the side and motioning him inside. "Thanks," Brandon replied. "This jacket is fine in the car but not good enough to stand around in," he added. He passed off the presents to Matt, then began pulling off his shoes. Matt, pointedly looking at the opposite wall, took them through the kitchen and to the living room, where he deposited them under the tree. As he went back, he saw Brain was fully inside Michelle as she fought Mary in Mortal Combat, the latter's controller somehow in two parts like a Switch controller, her left hand operating the buttons as she swirled a black plastic dildo in her cunt, the penetration angle apparently acting as the d-pad judging by how she was moving it around.

Matt got back to the kitchen just as Brandon came in. "Hi, Miss Cook, Mr. Cook," Brandon said, ignoring their hunched over position in front of the stove. Sarah had her hands to either side to support her bent over position, with Peter behind her, hands on her hips for leverage, their copulation obvious but concealed by the rolled up skirt. "Hi, dear," he added to Clair, moving over next to her to try for a kiss. She raised the meat tenderizer near his face, then brought it down on the meat.

"Boyfriends who get their car fixed get kisses," she commented, bringing the tenderizer down hard for emphasis. Brandon backed off in surrender. "Meats ready," she added to her mom.

"Good, the veggies toooooooo?" she asked Matt, cumming slightly o his father's dick. He nodded, trying not to be too obvious about not looking directly at them.

The pair at the oven backed up, Sarah still impaled on Peter's dick, the pair having not trouble moving backward in sync, pulling open the drawer for Clair to put things in. "Everyone set ugh the table," Sarah yelled toward the living room, only stuttering slightly as she was gently thrust into.

"One minute mom," Mary yelled back. "Just let us finish..."

"NOW!" Sarah yelled, cutting her off, heading into the living room. "I've told you all before that you can play when you don't have AHHH things to do."

Clair bent over (at the waist for some reason, baring her exposed cunt to all in the room) to put the meat in the oven, while Peter pulled out of his wife and set up the veggies to steam on top. Clair closed the oven but didn't stand up, and in full view of myself and Brandon, Peter lined himself up with his daughter's pussy and sunk home, again having to do a few hard thrusts into her before the stove lights caught. Sarah began puttering around the room getting food ready, directing the others as they came in, no one glancing at their father and sister fucking in front of the oven.

As his girlfriend let her father rail her, Brandon turned to Matt, looking sheepish. "Ok, I guess she's a bit mad about the car thing. Could you help me get my stuff in? It's cold out there." Matt dumbly agreed, and the pair grabbed shoes and coats and brought in his bags, walking past the still fornicating pair at the stove and upstairs to put his bag's in Clair's room (Brandon stating hopefully that he hoped he wasn't going to end up on the couch).