My Big Step Dad Part 4

[tekuno]

As mentioned elsewhere, I'm taking Musclegod300 up on his permission, which he granted in the comments of another thread, to complete any of his old abandoned stories. I always thought "My Big Step Dad" was one of his best, and that he stopped just when it was getting interesting.

This story involves muscle growth and lots and lots of gay sex, but there's no incest (step dad, remember?). Since the poll I had in the Story Ideas section went against it, this story will NOT end with macro growth; although there's going to be totally unrealistic size and strength, the growth will be limited to human stature, albeit large human stature. I tried to imitate Musclegod300's general tone as far as I could without making it sound like a parody, so please be generous.

First off, here are links to the first 3 parts, so everyone can get up to speed on it:
Part 1
Part 2
Part 3
(I also started this part with the last few paragraphs of part 3, for the sake of continuity.)


There will be a part 5 -- I'm already pretty far into it -- and maybe a part 6 as well, depending on how fast I push the characters towards the end I have in mind.

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My Big Step Dad
Part 4

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Derek grabbed the syringe shoving into his arm feel the formula flow through his blood. He threw the steroid on the floor and hit a pose feeling his body tremble uncontrollable.

?And Now To Get Bigger!?

Derek watched his chest explode with veins feeling his muscle?s pump up. He squatted down feeling the power rush through his body watching his own cock inflate bigger squirting cum out on the mirror. He felt the weight of his balls increase watching his biceps expand in size, the neck muscles exploded on his growing back. Derek laughed thinking of the possibilities watching his cock inch up towards his face. He shoved his mouth over his cock head licking his own cum hole with his tongue his body still expanding his deepening laugh filling up the room.

?So Huge!?

Derek held up his 18 inch biceps and flexed them watching his chest expand chest hair snaking out of his skin. Derek licked his cock shoving his mouth down the thick veiny pric. Grabbing his own balls trying to shove his ever growing cock down his whole throat. He bucked faster shooting his warm cum down his throat moaning in extreme pleasure. He slowly licked up all the cum of his cock head when he heard his mom knock on his bedroom door..

"Sweetie, I just got a call from work. There's an emergency and they need me to cover. I just texted Scott, and he offered to pick up a pizza and bring it over for dinner. I'll be back later tonight, don't wait up."

"Okay Mom. Good luck!"

"Thanks, Sweetie, I love you! Goodbye!"

Derek grinned as he heard the garage door open. He turned back to the mirror.

"Holy shit!"

While he was talking to his mother, Derek had finished growing. His reflection showed a majorly hung young stud with 19 inch arms and a huge hairy chest and massive legs. His cock immediately inflated again at the sight, smacking against his abs and pointing up to his chest.

"And Scott will be back soon, we're going to have a little party ha ha."

Just thinking about spending the night with Scott made Derek so horny that his cock exploded again, coating his chest with cum.

Derek cleaned up his chest and the mirror, and then went to the gym to pass the time until Scott showed up. In every exercise, he was able to use the weight which used to be his maximum for reps -- lots of reps.

"This is awesome, I can't wait to show Scott!"

The doorbell rang. Derek ran to the door and threw it open. Scott was there, shirtless, even bigger than before, carrying a pizza box. His huge hairy pecs bulged out inches from his ribcage, over a rippling 8-pack. The pizza box was dwarfed by Scott's massive lats, forcing his 21-inch arms outward.

"I noticed you took one of the syringes, so I thought I'd take another one myself. And then my shirt just tore off."

"Oh, man, you look so hot. Put that box down and let's fuck!"

Scott carried the pizza into the kitchen, and Derek followed. He watched Scott's huge back and compared his own body to Scott's. Someday, someday soon, he would get that big. In the meantime, he and Scott could enjoy what they already had. As Scott put the pizza down, Derek reached around the swell of Scott's back and squeezed his nipples.

"Oh man that feels good. But it's no fun if I can't see you."

Derek withdrew his arms, and Scott turned around.

"Let me see how big that giant cock got dude."

Derek smirked and unzipped his fly, releasing his giant prick. It swelled up to its new size of 15 vein-covered inches and throbbed, over a pair of testicles the size of baseballs. Scott reached out and stroked it as pre began to flow down the shaft.

"Okay Scott, I showed you mine, now show your new son yours!"

Scott undid the buttons on his pants, and practically tore them off his body, kicking them into a corner. He pulled his shorts out of the way to show a fat 13-inch cock bulging out of his hairy crotch.

"Haha Scott you're getting pretty big down there!"

"Not as big as that huge teen tool of yours. Let's get back to what we were doing before we were interrupted."

Scott knelt down and started to suck on Derek's massive tool. It was so long that he couldn't fit it all in his mouth, but he used his tongue to reach out and stroke an extra inch.

"That feels awesome! Shit dude I'm coming! Aw, yeah!"

Derek's mammoth balls pumped a giant load down Scott's throat. At the same time, Scott came, spraying all over the kitchen floor. After Derek finally finished, Scott pulled off him.

"That was hot, but you were going to fuck my ass."

"No problem dude. I'm a superjock now! Just watch!"

Derek flexed his cock, and it slowly rose back up. If anything, it was even larger than it had been before.

"Fuck! You're such a stud! Come and fuck your Muscle Dad!"

Scott turned around and Derek rammed his cock in.

"Flex for me, Dad!"

As Derek hammered in and out of Scott's muscled ass, Scott flexed his bulging muscles. Derek groped Scott's huge arms, once again pinched his nipples, massaged his hairy chest, and finally reached down and started jacking Scott's cock.

Scott came again, adding even more cum to the puddle on the floor. Derek continued to pump for another several minutes, rubbing his hands over Scott's tight abs and massive chest, before he blew his load.

"Haha that was awesome dude! Let's do it again after we eat!"

"Sure thing slugger, but first we better clean all this up."

They cleaned up the spreading puddle of cum, and then sat down to eat. Just as they were finishing, Scott's phone rang.

"It's your Mom. Hello Honey? ... Really? ... Aw, too bad. ... How long? ... Wow. ... Oh, sure, no problem. ... No, I can do that. ... Sure, hang on." He held out the phone to Derek. "She wants to talk to you."

"Sweetie, I'm sorry, but it turns out that the emergency at work is because of a problem at a remote office. The manager was fired last week and the assistant manager fell and broke his leg, so there's nobody there to take over. They want me to go there and run things for a week. I'm sorry, but I don't think I can turn this down. Scott says he'll take care of you while I'm gone, if that's all right with you."

"That's okay Mom, you do what you have to do."

"I'm going to be gone through your birthday. I'm sorry, Sweetie."

"No don't worry about it. Scott and I will do something special, I'm sure."

"Thanks, Sweetie. You're such a good boy! Scott is going to pack me a couple of bags and bring them over here, and I'll head straight for the airport, so I won't see you again until at least next Wednesday."

"That's okay Mom. You just be careful out there."

"Thanks again Sweetie, I love you."

"I love you too, Mom."

"Now can you give the phone back to Scott? I need to tell him what to pack."

Derek gave the phone back to Scott. "Hello? ... Yes, no problem ... Let me go look..."

Scott wandered off towards the master bedroom. Derek heard him pull out luggage and shuffle through the closets. After a few minutes, Scott came out carrying two medium suitcases. He had also managed to find a shirt which fit his new, larger body.

"Yes ... yes, I'll be there in twenty minutes ... okay, love you." Scott hung up. "Okay, Derek, I have to go drop these off for your mom. When I get back we can go have a workout."

Derek watched him drive off and ran to the bathroom. He pulled his clothes off and flexed at himself in the mirrors.

"Oh, yeah! Big muscle kid fucked his new muscle daddy! Gonna do it again soon! I'm going to get so fucking huge! YEAH!"

Derek's turbo-charged dick got hard again looking at his thick quads flexing. He ran his hands up and down his 8-pack feeling the hair, and massaged his thick hairy pecs with one hand while jerking his cock with the other. It looked so thick and juicy that he leaned forward and began sucking at the head while jerking off. Within minutes, he had cum again.

The wait for Scott to come back seemed to take forever, but finally Derek heard Scott's car pull in and raced to the door. As Scott came in, Derek ran to him, pulled him into an embrace, and they kissed. Derek pushed hard into the kiss and Scott reciprocated. Soon the two were making out on the sofa. It wasn't long before Derek was pumping a load into Scott's ass.

"YEAH! Fill me with that hot teen spunk!"

Derek reached around Scott's huge torso. With one hand, he massaged Scott's nipples, which were forced out by the mass of his chest, and with the other, he started jacking Scott off. By the time Derek's hyperactive teen cock had blown a second load, Scott's more-than-foot-long dick was also spraying cum all over the two of them and the sofa.

"Aw, damn. I didn't want to have to clean up the sofa. But it was totally worth it, that was amazing."

"Yeah. We're so fucking hot it's unbelievable. That's the fifth time I've cum in the last three hours!"

"Jesus! Well, if we're going to get a workout in, we'd better hurry. It's a school night, and I don't think your mom would forgive me if I let you stay home tomorrow."

"Oh, yeah. I forgot. Let's make the most of it."

In the gym, the two found that they were now monsters. Scott's bench press was up to 550 pounds, and he was curling 160. Derek wasn't up to Scott's level, but he was still incredibly impressive for a teen, managing 350 on the bench and 120 for curls. Derek's legs were, of course, incredible, but Scott, being a full adult bodybuilder -- with even more of the steroids in him -- had far surpassed him. Scott's thighs had incredible separation and hardness. Derek caressed them through the coat of hair which spread away from Scott's bulging crotch, feeling how hard and massive they were, as Scott finished his last set of bench presses and sat up.

"Okay, Tiger, it's time for you to get cleaned up and go to bed."

"Aw, Dad, do I have to?"

"No buts, son. Now come over and give your Daddy a kiss."

Scott pulled Derek's chin up and the two kissed. Scott's cock was straining away at his workout shorts, looking bigger and thicker than ever. Before Derek could get into it, though, Scott broke off.

"If we're going to do any more of that, then let's do it in the shower. And don't forget to shave tomorrow before you leave for school. You've got a beard going there, Slugger."

Derek practically ran to the bathroom, turned on the water, and pulled off his workout clothes. While he waited for Scott to catch up, he flexed in the mirror. The huge, hairy teen in the mirror was easily bigger than anyone else his own age Derek knew. His arms alone were almost too big for a teenager, and his prick was inflated with blood and pulsing against his cobblestone abs.

Scott walked into the bathroom, peeling his shorts off his thighs. His thick, meaty cock, pushing out from his furry crotch, was covered in throbbing veins and bobbed back and forth as he walked up behind Derek. He started to rub Derek's body. Gently at first, massaging the teen's broad back, but with increasing intensity as he moved to Derek's meaty delts and biceps, feeling the dense, hard muscles. Finally, he grabbed Derek's waist, marched him into the shower, and started fucking him hard.

"Oh -- oh -- oh -- GOD --- THIS --- FEELS --- SO --- GOOD!" screamed Derek as the huge, masculine bodybuilder pounded in and out. He reached down and started jerking his own prick in the warm spray of the shower.

"SCREAM FOR YOUR MUSCLE DADDY, DEREK! SQUEEZE THAT TEEN ASS!"

"YOUR COCK IS SO HUGE! OH MY GOD! SCOTT!"

Scott roared and bucked, hammering into Derek with the weight of his whole gigantic hairy body. Finally the two of them came. Derek coated the walls of the shower stall with his sticky teen semen. As Derek panted, leaning against the wall, Scott used the showerhead to rinse down the stall.

"Oh, god, Scott. That was just... that was better than it was earlier, and that was my previous best."

"We'll have to do it again sometime."

"Yeah!"

"But that's all for tonight. Growing boys need their sleep. And we're both growing boys, right?"

"Right. Goodnight, Scott. I love you."

"I love you too... son! I'm going to be staying here until your Mom gets back, since she was worried you might do something naughty while she was away."

"If she only knew! Haha!"

Derek lay in bed, drifting to sleep in the afterglow of the amazing sex in the shower. "I can't wait to show off my body to everyone tomorrow! It's going to be awesome!"

[GTlifter]

Thank you for restarting this, a great little series and anything you choose to add we will all be anxiously waiting.

[Kijin]

Please don't write stories depending on what others want you to write. If you wanted to create a continuation of his story with macro growth then you should do exactly that. I was admittedly disappointed when I read that you abandoned those ideas because of community backlash.

However, his stories were never really macro anyway. I think the largest any of his characters got was eight or nine feet.

but yeah write what YOU want mate

[tekuno]

Originally Posted by Kijin

Please don't write stories depending on what others want you to write. If you wanted to create a continuation of his story with macro growth then you should do exactly that. I was admittedly disappointed when I read that you abandoned those ideas because of community backlash.

However, his stories were never really macro anyway. I think the largest any of his characters got was eight or nine feet.

but yeah write what YOU want mate

No, actually, this is the direction I wanted it to go to begin with, but I was going to go elsewhere if the poll said people really didn't want that. (In fact, the opening post on the poll thread says so!)

[chocomus]

wow, this was really intense!!!!!!!! So awesome, they are growing great!!!!
And the style was quite similar so it didn't feel off at all. Good job!!!

I'll be looking forward for next instalment!!!!

[tekuno]

Originally Posted by chocomus

I'll be looking forward for next instalment!!!!

I have enough to post, I think, but I want the breaks between parts to be breaks in the plot/action as well, and I'm not quite there yet.

(Usually, I've been posting whole stories at a time. That's not because of any personal preference against splitting things up, it's because I tend to make a lot of sweeping changes afterwards -- as in "whoops I made this character too big too fast and now they're bigger than everyone else when I wanted them to have a ways to go yet" or "uh oh the holiday where they decorate graves in Mexico is in November not May".) (Good thing I thought to check on that last one instead of relying on my memory!)

Incidentally, you, personally, meaning Chocomus, are the reason why this whole part of this story had neither one of them growing onstage (so to speak), so I hope you enjoyed it. I saw your comment on the previous part and tried to string them out rather than make them bigger. Unfortunately, if you don't like fast growth, the next part... let's say it more than makes up for it. (And there's still at least another part coming after that! I'm afraid my addiction to contrived happy endings is going to make another appearance, too.) But if you like huge guys having sex, there's a lot of that, too -- it's not a case of one or the other.

With luck, I'll get the next part of the story up tomorrow, although I have decided I'm going to sketch a progression of what happens after the end of the other story I just posted, and post that to the scraps section of my FurAffinity account some time tomorrow, so I may not have time to work on this story too.

(I'm still astonished that nobody has guessed what that other story is based on. Maybe it's unfair, since obviously I already know, but it seems like there are so many things in there which should tip someone off...)

[cohzaku]

God this story just rubs me the right way. Read all four parts, and now I'm twitching for the next instalment (Well, part of me is.)

[chocomus]

Originally Posted by tekuno

Incidentally, you, personally, meaning Chocomus, are the reason why this whole part of this story had neither one of them growing onstage (so to speak), so I hope you enjoyed it. I saw your comment on the previous part and tried to string them out rather than make them bigger. Unfortunately, if you don't like fast growth, the next part... let's say it more than makes up for it. (And there's still at least another part coming after that! I'm afraid my addiction to contrived happy endings is going to make another appearance, too.) But if you like huge guys having sex, there's a lot of that, too -- it's not a case of one or the other.

wow, thank you!!! I really enjoyed it, I like surprise growth like that lol. Well I like every possible way of growing, fast, slow, detailed, offstage.... I dunno, everything!!! Seems that this stry is gonna have a bit everything and I love it!!!!
Hum... I'm gonna read the next part now (yay, it's out!!!), hehe, can't wait ^_^