--Disclaimer---
This story is entirely fictional and doesn't/shouldn't represent any real life situations. It is strictly for entertainment purposes.

The crisp summer morning air wafted through Sebastian's bedroom. The 29 year old stallion turned on his side away from the open window to an empty bed. He was surprised to see his 11 year old son wasn't there beside him like usual. A year earlier the two of them had become more than just father and son. Despite the taboo, he and his son Bobby were in a romantic and physical relationship too. Most nights these days the boy slept naked together with him. Especially after a Saturday like the previous night, which was mostly a romantic movie night. 

Feeling the sheets beside him, they were just barely still warm where Bobby would have been laying. It seemed he had snuck out of bed early, but for what reason Sebastian didn't yet know. Sitting up and yawning he looked down at himself. His sheets were tented high from his monstrous morning erection which normally would have been taken care of by now. Slipping out of bed, he took the bathrobe from the hook on his door and covered his twitching 2 foot equine cock. Tying up the robe, he stepped into the hall expecting to hear the shower running. It was silent. As he pondered just where his son might be, he suddenly got a waft of a very pleasant aroma.
“Cinnamon rolls?” He whispered and headed for the kitchen. Clopping into the room he was surprised to see Bobby doing dishes in the sink while the countdown on the oven showed 10 minutes. 
“Kiddo? You're making breakfast?”

Turning over his shoulder, Bobby's face lit up with glee. “Hey you're up!” Bobby exclaimed as he turned off the water and ran up to Sebastian hugging him. Bobby was wearing a white apron covered in cinnamon and flour, but very clearly nothing else. There was just a thin layer of cloth barely concealing his naked form. 
“Hehe, sorry I left you stiff this morning, but I wanted to get ready for your father's day breakfast!” 

It was only then that Sebastian remembered what day it was. He smiled and hugged Bobby, reaching one hand behind the boy to squeeze his butt. 
“You're so sweet kiddo. Those are my favorite.” 

“Yeah, I know.” Bobby giggled, slipping both hands under Sebastian's robe. “I have big plans for today, so be sure you eat up.” Bobby's hands ran from Sebastian's legs up to his heavy and hanging balls. Gently squeezing them, Bobby could tell his father's morning wood was in need of release. Just feeling around its base got the 11 year old hard as well. His impressive 12 inches tented the apron giving Sebastian a clear impression of just what Bobby had in mind for him. 

BEEEEEEEEP!

Just as the two started to enjoy each other's bodies the oven blared its timer. Bobby was quick to pull away from Sebastian as he tossed on a pair of oven mitts. Pulling the tray of rolls from the oven, he placed them on top of the burners, closed the oven door and turned off the heat. Pulling off the mitts, he turned back to his dad and smiled. 
“Get ‘em while they're hot!” 

Sebastian smiled and walked past Bobby,  rubbing the top of the boy's head. Reaching to the cabinet he pulled out two dishes and a spatula from the drawer. Serving them each up two cinnamon rolls, they sat in the kitchen eating the warm, gooey, pastries. 
As they ate their erections slowly diminished, leaving them both comfortably soft for the remainder of breakfast. Both knew that wouldn't last though as their lust for one another only grew stronger with each passing moment. 
“So what else did you have in mind for me today, kiddo?” Sebastian asked as they each swallowed their last bite.

“Well,” Bobby smiled, standing up from his chair. “Why don't you head up to the bathroom and wait for me to clean up…then I'll come and clean you up.”

Sebastian's dick twitched, he was more than impressed already by his son's initiative and was really turned on by how he was getting spoiled. Nodding, he stood up from the table and headed out of the kitchen. Just before he crossed the threshold to the next room he felt a slap across his back side. Turning around he saw Bobby wink at him then start to clean up. The older stallion couldn't help but blush and feel a sense of pride in his 11 year old. He had grown up so much in the past year and had even started taking more of a lead in the bedroom. Sebastian never would have imagined falling for another stallion let alone his own son. However, now that they were in that kind of relationship he couldn't help but crave his young body every day. 
Luckily there wasn't much to clean up from breakfast, so Bobby was quick to follow Sebastian upstairs. Leaving his apron in the kitchen, Bobby took to the stairs completely naked. As he walked the movement of his tight balls rubbing against his inner thighs quickly got him hard again. By the time he stepped into the bathroom he was throbbing and ready for action. 

Sebastian had just turned the water on, and stepping to the side he faced the door. Bobby was right there beside him. To his surprise the boy pulled the cord of his robe, and walked behind him sliding it off his father's shoulders. 
“You won't need this, dad.” Bobby said seductively. “No clothes allowed today.” 
Sebastian crouched down and tilted his head. He was overdue to give his son the good morning kiss they both had grown accustomed to. Bobby giggled as he parted his lips and their tongues met. 

“Mmmm. Hmmmmm. Mmmmm. Mwah.” A trail of saliva trailing between their lips as they looked lovingly at each other. 

“I love you, kiddo.”

“I love you too, Dad.” Pushing open the shower door Bobby pointed inside the steamy box. “Sit in the corner.” 
Sebastian smiled and did as he was told. Sitting in the corner of the tiled shower, letting the hot water hit his hooves, he watched his sexy son enter and close the door behind himself. The boy's body was a slender brown, much like his own. The impressive 12 inch cock springing from his body was always a pleasant sight. Bobby was VERY big for his age, even for a budding young stallion. Even in the past year, Sebastian saw him grow another few inches up to his current length. He wondered just how big Bobby would be by the time his early blooming subsided. Licking his lips, Sebastian eagerly awaited his son's touch.

Taking the bar of soap from its holder, Bobby lathered his hands then sat between Sebastian's legs. 
“That's a good boy.” Bobby giggled, then slowly began rubbing his soapy hands over Sebastian's ankles. 

Bobby worked slowly up his father's thin but muscular legs. Making sure to clean every inch of him from hoof to thigh. As he approached the stallion's groin he stopped telling him to turn around. Shifting positions, Sebastian sat with his back to Bobby. The boy soaped up his back with both hands a little at a time. Rubbing up from his tail, he worked in the suds messaging out the stiffness from his father's stress. Up under his arms, down each of them one at a time, then up his mane and down his chest again. As Bobby scrubbed his fingers across Sebastian's chest the older stallion could feel Bobby's twitching boyhood rubbing against his back. He hummed knowing his well hung 11 year old was feeling as good as he was. Then stepping back, the boy lathered his hands with extra soap and slid them down to his father's butt, rubbing in circles. Sebastian lifted himself slightly, giving Bobby the room to slide his right hand between both cheeks a few times too. 

“Ok, rinse then sit down again.” Bobby told him. 
As he washed off the soap, Bobby lathered and cleaned up as well. Giving himself a quick once over, he gave extra attention to his backside knowing full well he needed to be clean for later that day. With his father finishing and returning to the floor Bobby stood in front of him looking him dead in the eye while he rubbed the soap off himself. His hands trailed his arms, torso, legs, and the full length of his shaft. Bobby was clearly giving the stallion a long look at his body, letting his father drool over his perfect form. As the last of the soap fell in the drain, Bobby turned off the water, and knelt in front of Sebastian smiling. 
“Ok Dad, now for the fun part. I'm gonna clean you the old fashioned way.” 

“The old fashioned way?” Sebastian asked curiously, despite having a pretty good idea what he had planned. 

Bobby nodded and crouched down until his face was right next to the stallion's balls. Opening his mouth wide, Bobby began lapping his tongue across his father's big heavy sac. Sebastian immediately let out a long moan, feeling his son's tongue working across his skin. Bobby licked across, up, down, under…everywhere! Moving from one swollen nut to the other he licked and sucked them clean. Moving upward the boy ran his tongue across the wrinkles at Sebastian's base. He could taste his adult musk from overnight which had collected at the bottom of the shaft. Reaching up with both hands he gripped Sebastian's 2 foot long cock for support as he slowly worked up the length of it. 
Reaching the stallion's medical ring, he spent an extra minute teasing around the thick ridge. By this point the Sebastian was just about shooting out precum as each lick from his son sent waves of pleasure through his loins. Bobby eagerly licked every drop as it trickled down too. Making sure not a single bit of his mature lover's delicious juice was lost to the drain. 

Sebastian panted and moaned as his young son gave his cock such a thorough tongue bath. He couldn't believe how good Bobby had gotten at pleasuring him in the past year. All of the lessons, matched with some trial and error, had made the 11 year old an expert! The boy's tongue felt incredible as it slowly ran further up his shaft. As the licking approached the edge of his flare, Bobby suddenly stopped and Sebastian heard him stand up. 

“Hehe, that's clean enough for now. Let's get you dried off.”

Sebastian's body ached. The sudden end in pleasure made him desperate for more. He was already like puddy in the boy's hands and was completely subservient as he was instructed to stand and dry himself. Doing as he was told, Sebastian toweled off. Once they were both dry, he was led by the hand to the boy's bedroom. To his surprise, Bobby had moved his mattress to the floor and used a large sheet from the linen closet to hide the mound of pillows around the edges. Clearly he had planned ahead for them to use the space for the day. Stepping onto the pad, they both got on their knees, though Sebastian sat back on his heels so they could be face to face. 

Bobby smiled and ran his hands up and down on Sebastian's chest. 
“Everything is for you today, Dad,” Bobby said seductively. “I'm gonna show you just how much I love you…your body…and your…”

“Aaaah!” Sebastian gasped as Bobby's hands firmly grasped the tip of his rock hard cock. 

“Hehe, you like that?” Bobby knew exactly how to pleasure him. Feeling all around the stallion's flare, the boy made sure he still had a healthy stream of precum flowing out. “You have the best cock, Dad. So big and hard…and full of delicious juice.” 
Lowering his head, Bobby opened wide and slipped Sebastian's flare inside. Sucking on it and running his young tongue all around the tip, Bobby giggled as his father's precum shot into his mouth. The boy thoroughly enjoyed the sweet flavor of the stallion's pre. Every drop was joyfully gulped down. 

“Oh, yeah!” Sebastian moaned. Feeling the boy's tongue on his cock always felt amazing. He could hardly believe how good it felt. Not only was the boy gleefully drinking his precum, but his hands rubbed and explored his shaft at the same time. Although he knew after such a teasing he was given already, that he wasn't going to last much longer. 
“Kiddo, I…I'm gonna…”
Bobby pulled Sebastian's cock from his mouth but kept it wide open as he pumped his hands. The stallion's balls pulled upward and his hands gripped his ankles tight as he reached his climax. Stream after stream of hot cum splashed into Bobby's open mouth. While the boy gulped down every mouthful he could with glee, there was a lot more than just what touched his lips. The stallion's impressive manhood was like a fire hose, spraying his son's body in the thick white liquid. It splashed over his head, down his neck, dripping over his chest, and finally the last few spurts coated the boy's 12 inch boyhood. 

GULP. “Wow, what a load!” Bobby exclaimed. 

Sebastian panted heavily catching his breath as he watched Bobby scoop up some cum from his chest and suck it off his fingers. He hadn’t cum that much in quite a while, but he was impressed Bobby had so quickly slurped it up. 
“K…kiddo.” He could hardly process such a powerful orgasm as his son wiggled closer and pushed him onto his back. Still reeling from the pleasure of release, Bobby eased the stallion's legs apart. 

“This should be plenty of lube.” The young horse said, rubbing his father's cum all over his boyhood. “You ready?”

Sebastian whimpered, but only at how quickly the boy was pushing him for round two. Lifting his legs and holding them under his knees, he exposed his tailhole to Bobby's eager dick. 
“Go easy on me kiddo, I just came after all.”

“Of course,” Bobby giggled.
Pressing his young cock to Sebastian's hole, the ample cum caused it to quickly slip inside. Sebastian gasped feeling his son's smaller, but still considerable flare, expand his body. Slowly the boy slid further in. Inch by inch to his medical ring, then a bit further until he was balls deep. The boy let out a happy moan, enjoying every second of having his boyhood inside his father's butt. Since being introduced to sex, especially with another male, the boy loved the feeling of sliding inside every time. His father's hole felt amazing as it perfectly gripped his cock. 

It was a good thing Bobby was only half his size too, or he'd never be able to take the whole thing. Even when topping his son, Sebastian could only get halfway inside. However, feeling the boy's tight balls against his crotch felt absolutely heavenly. He was so proud of how Bobby was acting too. The slow sensual thrust inside and waiting for him to get comfortable, only showed him just how caring the boy was. The warmth he felt in his heart as well as his ass, brought him back to full mast again. Looking deep in his young son's eyes he smiled.
“Ok kiddo, I’m ready. You can start moving now.”

Bobby wiggled forward on his knees getting into a more comfortable position. He placed his hands on each of Sebastian's legs, letting his daddy's arms rest to the side. Returning the smile he nodded then began bucking his hips. Both the stallion and his 11 year old lover began moaning in unison. 

SHLICK PLAP PLAP PLAP SHLUCK PLAP PLAP 

Having his own cum act as lube as Bobby penetrated him was pure bliss! Sebastian reached up and pulled him close. Tilting his head he kissed the boy while they continued having sex. 
“Mmmm. Hmmmmm. Mmmmm. Mwah! That's it kiddo, keep mating me. Give me that big cock of yours.”

“Oh, D…Dad! I love you! I love you so much!” 

“I love you too kiddo. Come on, go faster! Cum inside me!” 

“Oh, Ah…AHHH!” Bobby screamed as he sped up just in time for his body to reach climax. His boyhood throbbed and pulsed shooting ropes of cum into Sebastian's body. His legs quaked as waves of pleasure coursed through him. 

Sebastian bit his lower lip as he felt the boy's warm cum filling his body. Every squirt felt better than the last, each one causing his manhood to throb wildly. No matter how many times he mated with his son, it never ceased to amaze him how much he loved it. It might have taken him his whole life to experience the wonderful pleasures of mating with another stallion, but he knew there was no going back to mares once he had taken his son as his lover. Especially not now, given the amazing of a mate he was. Kissing him once more as the last of the boy's cum dribbled out, he felt an overwhelming sense of pride and love for the young stallion. 
“Way to go, kiddo.” Sebastian said, stroking the back of the boy's head. “You're the best mate in the world.” 

SHLOOP
Bobby pulled out his half limp cock and let Sebastian's legs relax to the mattress. Breathing heavily he laid himself down onto his father's chest. He was far from finished with his plans for the day, but needed a quick break before continuing. 
“H…Happy Father's Day,” he mumbled, enjoying the warmth of Sebastian's chest. 

“Thanks, kiddo,” Sebastian replied. “You're really sweet. This was a great present.”

Bobby pushed himself up and looked loving at him. “You know we're not done right?” 

“Heh, wouldn't have expected you to be done this early.” Sebastian chuckled and gently stroked Bobby's boyhood until it was stiff again. “Why don't you rinse this off so I can give it a good taste? I think my present should be clean before I can enjoy it.” 

“Hehe, ok Dad. I'll be right back.”

Sebastian watched as Bobby quickly jumped up and ran out of the room. His slender body perfectly complimented his above average boyhood. The 29 year old stallion stretched his legs and folded his hands beneath his head. 
“I'm so damn lucky,” he mumbled, looking down at his twitching manhood. “That kid is the best thing that ever happened to me.”