As Nicky got back to his feet, he felt a rough hand grip his wrist. "Where do you think you're going, boy?" Marcus growled.
Nicky felt a shiver of pleasure up his spine at the sound of the man's gravelly, commanding voice. He replied "Just getting the water to wash out the shampoo."
Marcus didn't loosen his grip. "Oh no you don't. I ain't letting this stop anytime soon. Not while you've lubricated my cock. It's time for round two."
Nicky didn't really think his friend should grow any older, he looked like he was already in his forties. Yet there was a wild hint of curiosity. How would this man look in another decade or two? Besides, Marcus clearly didn't want to stop just yet, despite how much he had grown. Nicky knelt back down to suck him off again, only to be stopped. "Huh?"
"That's not what I meant..." Marcus said, as he reached past his gut to grip onto Nicky's shorts, yanking them down and releasing his own hard dick to the world, surrounded by ginger pubes. He blushed and momentarily covered himself. Marcus grinned as he picked Nicky up effortlessly, slipping his arms beneath his thighs and cradling his back. He slid off of the tree stump he sat on and propped his back against it. Getting comfortable, he lowered Marcus down until he was straddling his big dick, rubbing it along the underside of his ballsack, his cock brushing his ass cheeks. "You feel that? It wants you..." he uttered in a low, husky tone.
"And I want it..." Nicky moaned, leaning forwards so he could latch onto Marcus' fat body, his own hard cock buried deep in the man's stomach.
Marcus grunted and reached back to spread Nicky's ass cheeks wide. He teased the puckered hole with his cock tip, allowing his precum to dampen its virgin tightness. "You ready, boy?" He grunted in his gravelly voice.
Nicky gulped. He really was. "U-huh..."
Marcus smirked and squeezed his cock into Ricky's ass, slowly forcing his way upwards as the younger man gasped in pleasure. He pulled out just as slowly, allowing his friend to adapt to his girthy cock before shoving his way back in, a little harder. After a few slow thrusts, Nicky took it upon himself to speed things up as he began to bounce up and down with a quickened pace, riding the older man's cock like a pro.
Marcus appreciated his friend taking over the action, beginning to feel a little worn out. He wasn't as young as he used to be. He snorted at the thought, that was the understatement of the century! There was no guarantee he'd ever be considered young again. Even now, he was continuing to grow older. His belly was still growing, giving him plenty of fat rolls and a massive, lardy ass that was now sagging out across the ground. His large, hairy moobs continued to bloat and sag down towards his belly. His whole body would jiggle every time Nicky bounced on his cock. His beard was long and now tickled the top of his bloated stomach. His hair was rapidly draining of its original black colour, his beard and his body hair on the path to being as white as snow. Deep wrinkles and frown lines criss-crossed his leathery face. And despite it all, he was enjoying every second of it. Especially as he was fucking such a young hottie at the same time.
Marcus buried a paw underneath his growing gut and fished around until he gripped onto something long and hard. he grinned as he began to pump his hand slowly up and down Nicky's cock. He shouldn't be having all the fun after all. Nicky felt a little flustered when his old friend started giving him a handjob. They both locked eyes and Nicky surveyed his aging face. His beard and what was left of his hair had almost turned completely grey. Lines and creases etched his craggy face like spiderwebs, every second seemed to crack his skin even more.
Nicky couldn't believe he was watching his best friend age before his eyes, Going from overweight daddy to obese grandpa, and he was ashamed to admit that it turned him on with a wild passion. As the old man played with his cock, Nicky grasped onto his flabby body and played with his moobs. He lifted one up, surprised at how heavy it felt, and suckled on his nipple. He could tell it was making Marcus go wild. The hefty thrusts were quickening, their moans and grunts intermingling until they both cried out with passion. They both came together, ropes of cum splattering across Marcus' fat body, across the grassy floor, and dripping out of Nicky's ass.
They rested for a moment, Nicky laying against the old man's pasty, furry flab while Marcus cradled him with his hefty arms. He waited for his cock to soften and slip out of his ass. Nicky looked up at his best friend's face and sighed. He was certainly an old man now, with a bushy white beard and wrinkles that creased his round face. Even his body hair had turned white, making him more of a polar bear than a grizzly. Marcus wheezed and said "Oy, that takes a lot out of you... That's probably me tapped out for life."
"Aww, don't think you could last another round?" Nicky teased as he stroked his own hard cock, ready to go again.
Marcus reached under his belly and patted his junk. "More like I can't get it up any more. Not unless you have some Viagra in that bag of yours."
Nicky shook his head and winced. "Oh, you've reached that age, huh..."
"I sure have. Not the best handicap but not the worst..." He continued to play with his dick to see if it would wake up again before asking "So how do I look now?"
Nicky tried to find the right words. "You look, uh, much more mature than when you started. And also a lot wider..."
Marcus smiled, his face wrinkling even further. "That's a fancy way of saying I'm a fat, old man! I could probably be a mall Santa at this rate."
Nicky laughed. "I guess you're right. There's no sugarcoating it. You look older than my grandpa now."
"Grandpa Marcus huh?" He said warmly. "Has a nice ring to it... It's not like I'm getting any younger." Marcus chuckled and stroked his shaggy beard. "So what do you think? Reckon I should wash it out now? I can stand to leave it in a bit longer but It's your call."
Nicky studied at the man. He looked pretty damn old now, it was impossible to believe he used to be a kid an hour ago. He had to be in his sixties, at least. It wouldn't be fair to keep him waiting. But Nicky couldn't help but wonder how his friend would look in a few more years, or maybe even more. He did say to surprise him after all...