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Sonic hadn't gotten over what he saw that day and that made things a bit awkward between him and Knuckles. Thankfully the echidna was unaware of why he was acting differently towards him. Sonic tried his best to play things cool but it was hard with Knuckles walking around in that loincloth. Being aware of what was hidden underneath made it as if the cloth wasn't there at all. Just earlier the two of them crossed paths in a hall and for a moment Sonic thought he saw his thick cock and fat balls just swaying between his legs. But after blinking, it became clear that his mind was playing tricks on him.

From then on, Sonic began to pay more attention to the echidna, mostly from afar. It was only now that he was taking notice of how strong Knuckles looked, with muscles that explained his feats of strength. While doing his own training, Sonic would sneak glances at him, watching him lift heavy things like rocks or a ton of weight all at once. His body would become sweaty from the exercise and the hedgehog would then see flashes of the echidna without that loincloth, making him falter in his own exercises...

After another session of drills, the group were dismissed and able to return to their own matters. As Sonic was walking away, he noticed that Knuckles had stayed behind. Just as he did before, the blue blur hid behind the big rock and hoped that another chance to see the other male's endowment could arise.

He didn't have to wait long. Knuckles was soon taking advantage of the others being inside. In fact, he wasted no time in moving his loincloth to the side and gripping his already semi-hard cock. From the looks of it, he was likely going to make it quick in case someone came back out.

With his heart pounding, Sonic got another glimpse of the thick cock, being gripped and squeezed. In his excitement, he pulled down his shorts with one hand but lost his grip with the other, and fell to the ground. Hoping that it wasn't heard, he got up and returned his view to the tree. But Knuckles was gone.

"Where-"

"Looking for someone?" The hedgehog nearly jumped out of skin, turning around and finding himself face-to-face with the one he was spying on.

"Knuckles! Heh. W-what are you doing out here?" Sonic asked, trying his best to look and sound innocent.

"I should be asking you that. But I already know. You wanna get a good look at this, huh?" the echidna reached down and stroked his fat cock.

"No I..." he tried to come up with an excuse but Sonic had nothing that came to mind.

"Well, you got what you wanted!" Knuckles thrust his body forward and Sonic's eyes went wide to see and feel their cock's touching. As if to confirm what he saw from a distance a few days ago, the echidna's cock dwarfed his own. It was warmer and pulsing harder too. Before, he had considered himself pretty thick but having it compared to the strong male's made him gulp and shudder, unable to stop staring at it.

"Go ahead," the bigger male challenged. "Admit it. I wanna hear you say it."

Sonic didn't say anything and his silence was rewarded with more pressure being put on his cock, being smushed by the bigger one. Knuckles was suddenly pressed against him, his hot and sweaty chest touching to his own, pinning him to the rock.

"F-fine..!" Sonic grunted. "Dude, your cock is huge. It's so thick. I couldn't believe it and had to double check, okay?"

"Was it everything you hoped for?"

Sonic blushed and looked away. He had never considered himself gay, but his cock was harder than it ever was and every pulse that Knuckles' cock made brought a throb to his own.

"Damn. You're really stiff. How about I help you take care of that," he offered. Before Sonic could answer, he was already rocking his hips, grinding their shafts together.

Sonic began to grunt as he felt the big, sweaty meat sliding along his own. The strokes were slow and long, easing the shaft and the balls along, the whole thing humping against the hedgehog's smaller length. Being sandwiched between Knuckles and the rock, there wasn't much that he could do.

A part of tired to voice protest, that he wasn't into guys and should be enjoying this. But all that came out was a moan from a sudden rise of pleasure. His dick was already leaking and that warm slickness was making it easier for their shafts to grind, feeling better too...

"Now we're getting somewhere," Knuckles groaned, taking pleasure in the act as well. He didn't consider himself one that liked guys either but there was something about showing up the cocky hedgehog that allowed him to go ahead with this, enjoying himself with every rock of his hips and smack of their balls touching.

He was going faster and harder, moaning aloud. This was all to Sonic's dismay. The noises made were only making his cock pulse harder. He bit his lip and tried to think of something else, but simply couldn't, especially when his eyes fell on the thick meat again, throbbing and oozing a fat glob of pre. It was soon trailing down and making more of a mess between them. The moment it started, the steady leaking of precum continued, making their cocks messier and messier the longer the frotting was going on.

"K-Knuckles..." Sonic groaned. "Alright! You win. Your dick is huge and bigger than mine will ever be!"

Though the echidna took pride in the words being spoken, he didn't stop. In fact he humped faster, knowing that Sonic was saying these things in hope that it would stop. Just before his climax came. From the pulses and look on the hedgehog's face, it was clear that he was close. So he didn't let up and just grinned as the blue blur grit his teeth, failing to hold it back. He came and shot his load against Knuckles' cock, solidifying that he got off to another guy.

"That takes care of you," Knuckles said. "But what about me?"

***

The echidna managed to convince the hedgehog to get on his knees. It was considered payback for spying on him. If he did this little thing then it all could be put behind the both of them, never spoken of.

Sonic was already licking at the fat cocktip, trying to not put much thought into it. The taste of precum that met him was very strong and so was the flavor of sweat. His tongue was essentially cleaning it, reaching into the foreskin as well, swirling around the girth as best he could, trying to ignore the moans that came from the echidna.

"Heh. I knew you wanted it. Make sure you lick your own cum up too..."

Sonic paused for a moment but continued. So far his attention was mostly given to the tip and the foreskin, teasing those with steady licks. Though it felt good, Knuckles was looking for something more and took things into his own hands, by placing on top of the hedgehog's head and shoving it forwards.

Sonic's mouth was forced open and the cocktip sailed over his tongue. His head was pushed and pulled, made to properly suck the other male off. It felt even thicker in his mouth, pulsing against his lips while sliding back and forth. In his ears were the moans getting deeper. Slowly, he was adjusting to the meat that stuffed his mouth, wrapping his lips around it and daring to press his tongue along the underside. A blush came as he could taste his own cum, being streaked along the shaft. It clung to the pink muscle and he gulped it down, not having the room to spit it out.

The echidna enjoyed the warm mouth and smooth tongue that was around his cock, licking and sucking softly. He could certainly say that it felt better than his own hand. With his own strong arm guiding the way, he pumped up and down his length, easing more and more of inside with each bob.

"Fuck, you're good at this, Sonic. Sure you've never done anything like this before?" He got some muffled words in response with an annoyed tone. "If you say so..." After all the grief that he was given by the blue blur, it felt pretty good to show him up for once. His grip on Sonic's head was eased the moment he bottomed out in the soft mouth, feeling his length reaching down into the even warmer and tight throat.

"Oh yeah, now that's what I'm looking for..." Knuckles was given a whole other level of pleasure, easing his cock into the snug passage. Sonic had free reign of his head again and continued to bob up and down the length, getting a better handle on how to do this. The mixed flavors of pre, cum, and sweat was heavy on his tongue and even the masculine scent engulfed his senses, oddly enough it wasn't something he outright rejected.

On his own, he had trouble pushing the thickness back into his throat. The most he could fit inside was 3/4 of it and did his best with that slurping all over as he moved his head back and forth at a faster pace, daring to touch his hands to the pulsing flesh to make up the difference.

Knuckles groaned and just let Sonic continue, basking in the feelings that met him. He didn't realize just how desperate he had been for an actual hole. But times like these didn't give much time to go looking for some tail, what with the alarm being raised every other day. Even if it was the mouth of another guy, he just allowed himself to feel those soft lips and the slick tongue working him over.

"Getting close..." he grunted. He bucked his hips and Sonic's eyes went wide as the cock was suddenly jammed into his mouth. Being against the rock, the length pushed to the very end and another strong thrust pushed it down into his throat again, forcing the passage to open up. He could feel it being stretched, bulging from the sheer length that was stuffed down inside. Knuckles began to hump his mouth, gritting his teeth as he pumped his cock against the tight and squeezing walls. There was only so far he could reach, with it being too tight to fit, even with some forceful prods. Making do with what he was afforded, Knuckles pounded into Sonic's throat, riding out the increasing pleasure.

"Ugh... Yeah... Oh, h-here it comes.... Fuck, I'm cumming! Aaah!!"

A sudden flood of cum was poured into Sonic's mouth. He had no choice but to swallow it down. But that was hard as load after load splattered into his maw. Knuckles had at least stopped thrusting, moaning deeply and just enjoying the feeling of huge cum wads spurting out of his cock. It was too much for the hedgehog to take, tugging free and shooting thick echidna cum all over his face. The taste of it was planted on his tongue, a flavor that he was surprised to enjoy a bit. With the blasts of cum finally ceasing, Knuckles was just panting heavily, looking down at the mess he made with a heavy sense of satisfaction.

He felt completely drained but in a good way and offered his hand to the panting hedgehog. "Come on. Let's get you cleaned up before anyone sees." Sonic didn't say anything, just nodding as cum dripped down his face. He was currently thinking about a few things, mostly just how much he enjoyed back there.

Not far from away was a pond that he could wash up in. While he cleaned the cum from his face, Knuckles was also thinking about how good it felt. Now his cock was flaccid and hidden out of view by his loincloth. But the idea of somehow convincing Sonic to do this again made it tingle just a bit.