"FUCK!"

With another loss, The Goat beside Him throw His controller in absolute anger in the relevation that He had lost this round aswell. While He was Mad, The Monster Kid beside him smugly smirked.

"How in the HELL can You be this good?! YOU DONT EVEN HAVE ARMS!" He'd say, Salty, Suprised, and Angry at the game.

The Goat's name was Sariel Dreemurr, Twin of Asriel and sorta Son of Toriel and Asgore. Besides Him was A Friend; Monster Kid, Or MK for short. Currently Both Home alone (With a Sleeping sans on the living room) Both played Games like Super Smashing fighters...and Clearly, Sariel sucked at the game.

"Well, maybe because I have a really good memory! Or maybe because I play a lot?" MK looked proud, "And also, I have really quick reflexes. But most importantly, I don't let my lack of arms stop me from playing."

"Ughhhhh..." Sariel Groaned aloud at MK's words. "I suck."

"Yeah yeah...you suck." MK was being unhelpful on purpose, "But hey, if you keep practicing then eventually you'll get better right? So why give up now? Also, how many times did you lose today anyway? That's pretty bad even for someone who sucks so much. Maybe you should take some breaks or something.."

His words only got Sariel to growl, Annoyed. "No, I DON'T!" He WANTED to be better than Him at Something! "Maybe Video games were a bad example to Show that I am better! Let's do something else!"

"Ahh, I see. How about something physical? Like sports or something?" MK suggested, But Sariel declined that fast. "Nono...I suck at those too." 

The goat was quick to decline. Preetty Sure MK would win that anyways due to his "Great reflexes" and what not.

He chuckles "Yeah, you're right. But still, it'd be nice to try out new things once in awhile, ya know?"

...

Sariel did not respond, Stroking His chin, Making Monster Kid raise a brow.

But the armless monster still kept trying to suggest. "Alright, how about we play a game of rock-paper-scissors? Winner gets to choose what we do next. We can play a few rounds.."

Sariel stopped thinking to look him dead in the eye, Obviously knowing the intent for that. "...Don't patronize me, Im thinking." He deadpanned.

"Oh come on dude! It's fun! Just relax and enjoy yourself! Besides, if you win then you get to decide what happens next, right? So there's nothing wrong with winning sometimes. What could possibly go wrong? Right?" He smiled brightly, hoping to convince him into playing along with the game."

But Sariel didn't reply, Still thinking.

MK puffed, "Well, are you gonna play or not? Come on, it'll be fun! Please? You're really going to turn down an opportunity for some fun?!"

Sariel still doesn't reply, Unbeknownst to Monster Kid; The goat was looking at his pants the WHOLE time...

But He wouldn't notice, Just looking down to the floor with a dejected sigh. "Alright...I guess we're not gonna play then. It's fine... I'll just think about something else."

And THAT, was when Sariel finally would reply. ""I think i got it..."

MK looked up slightly. "What? Got what? Are you actually going to say anything now? Or am I wasting my breath here again...?"

His face turned red from embarrassment as he waited for an answer from Sariel. He was starting to lose hope that he'd ever hear one from Sariel at this rate.

Sariel continued being ominous. "I know of a FUN game we can play..."

"A game...? Really? That sounds interesting. Tell me more! How does it work exactly? Is...there any rules involved...A-Anything special?" He let himself get excited. His heart skipped a beat when he heard those words coming out of Sariels mouth.

Sariel didnt reply, He just got up and walked closer with a all too happy grin, Looking more devious than anything.

MK didnt care on that though, He just was Happy Sariel was responding again, "Yo! You've got me so curious now! Just tell me how to play already! I'm dying to know!"

...

And then Sariel grabs onto his pants, More notably the bulge in it, MK is shocked and suprised. ""LET'S PLAY DICK MEASURING~!"

"W-WHAT THE??!!!" Monster Kid's face immediately turned bright red like a tomato and he was too stunned to speak for a moment. D-Did Sariel really Just....?!

"Come on MK~ This will be a fun game!" Sariel Smiled Dubiously, Tugging on the waistband of His pants.

"Umm... I-I..." MK tried to speak but his words were slurred as He stumbled over his words.

Sariel put on a puppy dog sad face to Hopefully Guilt Him, "Pleeeeaseeee?"

And...It worked. "Nnn... Fine! But don't say I didn't warn you! I'm going to win! He puffed out his chest and sticks out his tongue, ready for the challenge.

Sariel chose that moment to scoff, Not believing Him at all. "Yeah right Monster Kid, and The Tooth fairy is real."

"YEAH RIGHT!!" MK's body language changes instantly, Smiling brightly.

"...You realize I was joking about the Tooth Fairy thing...Right?"

...It didn't take long for the frown to reappear on MK, "Ohhh yeah right.. That wasn't funny dude."

"Whatever, Just get your pants off."

[...]

In a matter of Minutes, Both Had their clothes off and could see eachother's cocks. Only one thing...was a amiss for Sariel...

Monster Kid was Bigger than Him.

While His dick was 7.5, MK'S FUCKING COCK WAS 10 INCHES LONG WITH A FUCKING WIDER GIRTH THAN HIS!!!

...

To Say Sariel was mad was a understatement.

"HOW IN THE HELL IS YOUR DICK BIGGER THAN MINE?! YOU'RE SHORTER THAN ME!"

MK had the most smug grin on His face right now~

His smirk widened even further, MK laughs loudly. "Welllll... You know how it works right? It's because I've been eating more lately so-"

"BULLSHIT!" Sariel Was sooooo glad Toriel wasn't here cause he was FUMING! "I REFUSE TO BELIEVE THAT! ASSHOLE!"

...Yeah, Sariel was being one salty bitch~

"Hey, It's true. I eat more than anyone else I know-"

Sariel just groaned Fustratingly.

"Hey, Come on! Don't be like that. It's not my fault I'm just... better at eating than you, that's al-"

"Fuck Me."

...Monster Kid was taken offguard by THAT, Completely. He looked at him shocked and surprised, almost speechless. "...What?"

Before He knew, Sariel was Bent over, Tail lifted to show his nice puffy asshole that got MK's mouth to water and His dick to throb ever so slightly.

Sariel pufffed his cheeks and looked away, Blushing slgihtly. "Did I stutter? Fuck Me already dumbass...~"

He gulps and looks down at the ground, blushing hard and covering his eyes from embarrassment. "U-Um..."

MK's cock throbbed hard at the sight of Goat ass, With it looking so fucking puffy and hot to Him...He couldn't resist~

The monster boy shuddered when he feels himself getting harder, he bites his lip nervously while staring at the ground again. "H-hey.. W-what are y-you doing?" he asks quietly, trying to hide how embarrassed he is feeling right now.

"I'm not doing anything." Sariel stated, swaying and wiggling His perky ass for him, It looking quite enticed for Him. "I'm just waiting for You to fuck me."

His face turns bright red, he tries to look away from him but fails miserably, instead looking back towards him with wide eyes. "Y-you're really gonna let me do this?" he whispers softly, biting his lower lip once more. "Are you sure?

"Yes Stupid." Sariel Rolled His eyes. "Do it already!"

As soon as He heard those words, MK felt his heart skip a beat and He slowly moved closer to Sariel until His cock's tip touched the outlines of the of His anus...

and then He thrusted.

"...!"

Sariel's screams were as loud as they could Be, Ear peircing Bleats to Showcase How MK's cock fit, The length and girth being squeezed immediately, Making MK groan.

"FUCK!" Sariel shouted, His tail wagging fast as His ass was filled with His friends cock. "S-So much DICK!~"

MK closed his eyes tight, moaning loudly as well before pulling out. It was everything he wanted and more, he didn't know if he should be ashamed or proud of this moment, but he wasn't going to question it any further than that. 

After all, he was enjoying this too much to stop now.

"P-Please Fuck Me....Please fuuuck meeeee....~"

Now that was something Monster Kid never thought He'd hear; Sariel in a begging tone! He saw his facial expression once He looked back; Sariel Had His tounge out lewdly and Panted harsh, Some...Hearts? forming in his eyes.

...

MK would be a liar if He said that wasn't fucking hot~

MK couldn't help himself from moaning louder now, feeling so full yet still wanting more. He could feel His own cock twitch from Sariel's begging. This whole situation was driving him crazy, but at least he knew one thing for certain - he liked where things were headed right now.

Sariel's eyes widened as he felt the monster kid enter him again. He had no idea how big this monster kid was, but it seemed to fit perfectly inside of him. He let out another loud moan, not caring who heard it this time around~

MK began thrusting into Sariel faster. "Ohh fuckkkk..." he moaned loudly as he watched the walls of his ass ripple from each impact. The sight alone made him feel even hornier than ever before. "Fuck yes!"

As soon as those words left his mouth, MK slammed himself deep inside of Sariel once more. Sariel gripping His fat cock tightly with his walls as He continued pounding away at him relentlessly. "Mmmhh! T-Take it...!"

"G-Give it to me Dammit!" Sariel voice went on a high octave. "F-Fuck Me Goddammit...!"

Monster Kid had grinned widely as He listened to Sariel speak. It sounded so cute when he talked dirty like that...and yet, there was nothing wrong with hearing such things either way. In fact, hearing someone talk dirty actually turned him on quite a bit more than usual. "Good boy." 

"Be more aggressive dammit! Make Me Your fucking Bitch! D-DO IT!~" 

He smiled mischievously as he spoke back to Sariel. "I'm gonna give you exactly what you asked for~" With that said, He bit on Sariel's neck, Emitting a loud moan from the Goat while continuing to pound away at him mercilessly.

Moaning loudly, he continued to ram himself into Sariel. It was honestly one of the most satisfying things he had felt in quite a while. 

To take someone like Sariel, who he was always friends with in these times...and to be able to do this to him right now...It was a feeling that he could hardly describe. 

As MK kept pounding away at Sariel's hole, he began moaning louder than ever before. The pleasure was almost too much for him to handle. As if reading his mind, Sariel suddenly stopped moving entirely.

and...MK soon felt close.

As MK felt himself getting closer to climaxing, he suddenly stopped all movement. He looked up at Sariel with a smug grin on his face...

Smirking evilly and getting into the moment, he leaned forward and whispered into Sariel's ear. "Do you feel it? You're already mine."

Sariel was lost in pleasure to give a shit as Monster Kid went His fastest, Both moaning with an equal urge to cum...~

As MK began to feel himself getting closer and closer to climaxing, he suddenly stopped moving entirely. He let out a loud moan before whispering into Sariel's ear. "You're already mine, Sariel." He grinned mischievously before continuing to pound away at Sariel's ass relentlessly. "I'm gonna make sure you never forget this moment..."

Monster Kid continued to pound away at Sariel's ass until he finally came inside of it, Filling the Gote with so much Monster seed. Sariel Came instantly upon feeling It, Staining the floor. It was quite a big batch of cum compared to the some Sariel produced, His belly expanded slightly. With one last thrust, he pulled out completely.

[...]

An Hour later, Sariel, Back to normal, Glared at MK, Who was looking nervous. "...Really?"

Monster Kid Knew The Goat friend was Mad about the part where "he acted like Sari was His onahole" thing "I...I know I didn't have your permission...but I've always wanted to do that...and you were just so...so...tempting..."

Sariel...smirked at hearing that. "Tempting?...How so?~"

Monster Kid blushed, "Uh...I mean...I mean...you're just...u--um..."

He looked down shyly, Not knowing where to look or what to say next. All he could manage to do was stare blankly while blushing furiously.

And Hearing some shuffling, He'd look up...to see the gyote bent over on the bed again. "Hey...Fuck me."

Monster Kid was simply Agape at that request. "A...Again?!"

"Yeah again...You were a good fuck," Sariel shrugged, Smacking his ass as He shaked it to tease. He stuck out his tongue and grinned mischievously. "Let's do it again~!"

MK Looked stunned for a moment, But then his dick twitched and he nodded...Ready as ever.

So, He started pounding into him once more. This time however, He wasn't holding back at all. His hips moved quickly and forcefully, Slamming against Sariels own each time he hit bottom. 

The sound of flesh slapping together filled the room along with moans from both parties involved.

Outside of the room...Sariel's cries of lust added along with monster Kid's groans were simply heard... But even that, Couldn't wake up the Skeleton in the living room.