Mary was married to a man who travels almost every week to client sites, leaving her with their high school aged son.
He usually came home every Thursday or Friday but on this occasion he was going to be gone for three weeks.
It was the middle of summer so her son James was not in school.
Mary was in the kitchen doing dishes while James was mowing the lawn. It was getting warm already and he had his tee shirt off. Mary watched him and thought about how big he was getting. He was wearing his speedo trunks so he could jump in their pool later. When he turned to face her she couldn’t help but notice the outline of his cock.
Oh my god! She thought, it can’t be that big! She tried to push those thoughts out of her head but she couldn’t stop looking at his cock bulge. To her shame, she felt her pussy getting wet.
Buster was a large mixed breed dog they had. He was laying in the living room when he caught the smell of a female in heat. He got up and followed the aroma to the kitchen where his mistress was at the sink. Without pausing, he stuck his nose into her crotch.
Mary yelped and turned quickly.
“Buster! No! Bad boy!”
Buster was confused. He knew that she was ready for his cock but now she was scolding him. He put his head down and slinked to the corner.
Mary felt bad about yelling at him and went over to him, bending down and petting him.
“I’m sorry Buster, but you startled me.”
He looked up at her and then put his head in her lap. She continued to pet him but Buster still could smell her wet cunt. He nuzzled against her crotch, pressing his nose against her cunt.
“Oh Buster! You shouldn’t do that!” But her tone told him she liked it. He got on his legs and started to lick her cunt through the thin cotton shorts.
“Ohhhhhh God! Oh god Buster!”, she moaned as his tongue licked up and down her cunt, causing it to start oozing cream.
She looked under his belly and saw his huge cock emerge from its sheath. She gasped at the size of it! It must have been at least 8 inches and as big around as her forearm!
She could still hear the lawn mower running so she reached under him and started to stroke his amazing cock. It was already squirting thin jets of dog cum as she rubbed it up and down.
His licking was getting her so fucking hot she frantically pulled her shorts and panties down.
Buster attacked her cunt with his tongue, sticking his tongue into her to get more of the delicious nectar.
But as good as it tasted, he needed to mate with this bitch. He stepped back and nudged her with his nose, indicating that he wanted her to get in position.
She was so worked up at this point all she could think of was getting that big cock inside her cunt. She got on her hands and knees and Buster jumped onto her back, holding her with his front legs as he started to jab at her crotch, searching for her entrance.
His cock stabbed at her several times before it found her center.
“Ooooooohhhhhhhhhhhnnnnnnnoooooooo! Ohhhhhhhhh god! Oh god! It hurts! Oh god!”
Buster was jamming his cock rapidly into her cunt. It hurt at first but gradually her cunt loosened and a feeling she had never experienced replaced the pain.
“Oh god Buster! Oh my fucking god! Fuck me! Oh god! Fuck me with your dog cock!”
It was nothing like her husband, who had a thin 5 inch cock and would usually cum in less than a minute, then roll off her and go to sleep. Buster was slamming his cock into her rapidly and his cum was squirting into her but he just kept going. Mary reached under her belly and rubbed her clit. She moaned as her first orgasm consumed her. Her arms gave out and she slumped her upper body to the tiles. She bit her lip to stop herself from screaming as a violent orgasm ripped through her body.
Her orgasm ebbed until it was just a buzz in her cunt. Buster was still rapid fucking her and soon she started climbing toward another orgasm.
She pushed back against the dog as she threw her head back, eyes closed in ecstasy!
Just as she reached her peak, Buster started to spurt long ropes of dog cum into her cunt. He was shooting so much cum that it squirted from her cunt around his cock. He filled her with what felt like a gallon of cum before he stopped shooting. He pulled off her, his giant cock pulling her cunt lips inside out as his cock sprang free, followed by a flood of cum pouring onto the kitchen floor.
When Mary recovered her senses she quickly cleaned herself and the tiles of the dog cum.
James had just finished mowing and was about to open the sliding door leading to the kitchen when he saw his mom on her hands and knees with Buster on her back fucking her!
She had her back to him so all he could see was the dog’s ass moving in and out and his mom pushing back against him.
His cock was hard as steel and he pulled it out, stroking while he watched his mom get fucked by the dog.
He had retrieved his phone from the patio table before approaching the house so he started recording his mom fucking the dog. He wanted to have it to masturbate to.
A few minutes later Buster pulled back and James got a full view of his mom’s cunt with dog cum hanging in threads to the floor.
He quickly retreated to the garden shed and finished jerking off to the video of his mom getting fucked by their dog. It only took another minute and he shot his cum against the wall of the shed.
Mary got herself together and finished the dishes. A minute later James came in the door. She was glad he didn’t come in a few minutes earlier or he would have caught her fucking the dog. She knew she shouldn’t have let Buster fuck her but with her husband gone, she was so horny she would have fucked anyone or anything that walked in the door, which made her wonder if that would include James, who had just come in the door. She looked at his cock bulge again, not being able to stop herself. It looked bigger and there was a wet spot where the end of his cock was.
“You better hurry to the bathroom if you have to go that bad.” pointing at the spot, not suspecting the real reason for the wet spot.
James got red in the face as he looked down at the spot and ran to the bathroom.
Later that day, James was in his room playing video games. He thought about what had happened that morning and couldn’t resist watching it again. He pulled his cock out and was stroking it while he watched Buster fucking his mom. Just as he was about to shoot his cum his mom opened the door.
“Do you have... oh god! I’m sorry!” She was going to ask if he had any laundry. She backed out of the room and closed the door, leaning against the wall for support as the image of his large cock was burned into her memory. He had his hand at the base and he could have had both hands and there still would be cock exposed above his hands. And his hand barely fit around it!
She was trembling, her cunt immediately wet. But she needed to apologize.
She knocked on the door, “honey? Can I come in? I need to apologize.”
James was embarrassed at being caught but he loved his mom.
“Okay mom.”
Mary opened the door and sat on the bed next to his chair. He swiveled the chair to face her as she said,
“I’m so sorry for not knocking. I don’t know what I was thinking but I want you to know that what you were doing is not wrong or anything to be ashamed of. Almost everyone masturbates unless they're a repressed idiot.”
She smiled as she said that and James laughed.
Then she looked at him seriously, “even I masturbate. Your dad is gone so much and I have needs just like anyone else. I hope you're not shocked to hear your mother talk like this.”
“We’ll, a little, but I guess I know everyone does it. I just never thought about you that way.”
“What way is that, honey?” She knew the direction she was taking this was dangerous but the memory of his hard cock overcame any taboos.
James blushed again.
“Well, I guess in a sexual way. I mean you’re my mom.”
“I am but I am a woman and I couldn’t help noticing when you wear your speedos that you have grown quite a bit.”
James blushed even more at that.
“But I’m curious. What were you watching on your phone?”
“Uh, just a porn video.”
He wasn’t about to show her the video of her and the dog. But when Mary stood next to him to see his phone, he opened it and it was still on the video.
Mary gasped as she saw Buster’s rear slamming into her and her moans of pleasure.
“Oh my god! You watched me and recorded it!”
“Oh god mom! I’m sorry! I’m so sorry! But when I was going to come in I saw you and Buster doing it and I couldn’t resist. I would never show it to anyone but I wanted it for me to watch.”
She thought about that and realized that instead of being repulsed by what she had done, James was turned on and had been masturbating while watching it.
“It was the first time that had happened and it was a mistake. You have to erase that. But if you want to see me naked, I have to confess that I have fantasized about you being naked also. I know it’s not right but I can’t stop doing it. Buster approached me because I was watching you in your speedos and my pussy was wet. He smelled my aroma and started putting his nose in my crotch and licking and, well, it just happened.”
Mary pulled her tee shirt over her head.
James was stunned as she continued to remove articles of clothing. Her bra was next, revealing her large slightly sagging boobs, capped by eraser sized nipples.
“You can take your cock out again honey. I want to see it!”
He pulled his shorts and boxers off.
“Oh honey! Your cock is beautiful!”
Mary pulled her shorts off then pulled her panties down slowly, exposing her hairy cunt.
“I want to watch you masturbate while I do!”
James started stroking his long cock and Mary sat on the bed facing him. Spreading her legs, she pulled her cunt open, “see how wet you make mommy?”
She ran her finger through her cunt then rubbed her clit. She need his hand on her so she grabbed his free hand and put it on her cunt.
“Oh god honey, feel mommy’s hot cunt! Oh god honey!”
She reached out and wrapped her hand around his cock.
Then she laid back on the bed, pulling him with her. She put her hand on the back of his head and kissed him. A very unmother like, passionate kiss.
They were laying side by side and fondling each other when Buster came in, smelling Mary’s cunt cream again. Seeing the male human with his mistress, he growled.
Mary and James looked to see Buster with his teeth bared, growling deep in his throat.
“Oh god! He doesn’t want you to have me!”
“What should we do?” James asked, afraid of the large animal.
“We have to let him fuck me. When he’s done, he’ll go away and we can fuck.”
James got off the bed and Mary got on her knees with her upper body on the bed. Buster jumped on her and his cock found her hole on the first stab!
“Ohhhhhhh god! He’s so big! Ohhhh James!”
James was stroking his cock as he watched. Buster wasted no time and didn’t care if Mary enjoyed the act. She did, judging from her moans as his red, angry looking cock sawed in and out of her cunt.
After a few minutes of Buster’s rapid fucking, Mary moaned,
“Oh god! I’m cumming! Oh god!”
As she was moaning through her orgasm, Buster shoved his cock all the way in, his knot sealing her cunt as his cum erupted into her! He filled her cunt and when he pulled out and left the room, his cum poured out of Mary!
Mary used her tee shirt to clean the dog cum from her crotch. She looked over at James and his cock was as hard as it could get, the skin stretched tight.
“Oh god mom! That was hot as fuck!”
“Then come here honey!”
He climbed on the bed and Mary pulled him into her arms. They kissed passionately again. They were both too worked up to worry about foreplay. Mary rolled on her back and pulled James on top of her. He rubbed his cock up and down her slit like he’d seen in porn videos. When his cock was slick from her juices on the next down stroke he pushed his cock in.
“Oooooooohhhhhhhh god yes! Yes! Oh god honey! Oh god! You’re inside me! Oh god! Your cock is perfect!”
Mary was babbling as her son fucked her.
She pulled her legs up and spread them, allowing his long cock to penetrate fully into her cunt.
“Oh fuck, mom! I’m doin it! Oh fuck yes! Oh god! You feel so good!”
James started to fuck rapidly but Mary grabbed his hips and showed him the pace she liked,
“Go slow at first honey. That way you can last longer. When I urge you to go faster, then you can speed up. But oh god! You feel so good and right inside me!”
She pulled his face down and started kissing him again, their tongues intertwining.
They fucked for a long time, enjoying each other. Mary orgasmed several times and when James was close they would slow down again. Finally, James couldn’t hold out any longer!
“Oh mom! I’m gonna cum this time! Ohhhhhhhh fuck! Oh god mom!”
“Oh yes baby! Fill mommy’s cunt! Oh god yes!”
He started spewing his cum into her, shooting more cum than he could ever remember!
Mary’s orgasm peaked again when she felt her son emptying himself into her!
When they had spent their passion they stayed in each other’s arms, James’s cock still buried in Mary’s cunt.
Mary asked James, “honey, I hope you’re okay with what we did.”
“Oh mom! It was wonderful! I’ve never felt anything even close.”
“I’m glad honey because I don’t want to stop doing it with you. But I’m afraid as long as Buster is around you’ll have to share me with him!”