Raiders of Grandpa's Butt

Both the dog twins; Remmy and Sammy were exploring in the woods one Sunday, with both boys dressed up like explorers as they entered a small cave together.
'Do you think Grandpa Richard will miss us'?, asked Remmy.
'Na. He's taking a nap in the sun. No way he'll miss us'., Sammy replied with a wink.
They were both being watched by their Grandpa Richard who was taking a nap, but he soon opened one eye to see if they had gone. After he knew that the coast was clear, he stripped off all his clothing, until he was butt naked. He then approach an opening within the cave wall. It was a bit too small for grown ups to crawl through, but not for kids like Remmy and Sammy. He smirked to himself as he knelt down and stuck his bare butt out at the opening, he backed up a bit and wiggled and squeezed his rear end inside the opening, until it fitted in quite nicely in the tight space.
The two boys were still exploring the deep dark cave, both not showing much fear as they were together, but they soon approached the rather large white furry lump with a crack going across it.
'Huh? What do you think this is'?, asked Sammy.
'Beats me'., replied Remmy.
Sammy the giggled. 'It looks like someone's butt'.
'Yeah you know, it kinda does. But who would do a silly thing like that'?, added Remmy.
'Maybe Dad'?, pondered Sammy.
"Or...Na it couldn't be'., started Remmy.
'Huh? Who do you think it is'?, asked Sammy.
'Well...It could be Grandpa'?, suggested Remmy.
'Hey you're right. It could be'?, pondered Sammy.
Remmy and Sammy then both put their paws onto the warm fur and flesh of their Grandpa's butt.
'Yes. C'mon boys, I know you too well. you both know what to do'., smiled Grandpa Richard from outside the cave opening. Becoming so excited that he was developing a bit of a stiffy on his crotch, as the boys continued to fondle with his ass.
'If this is really Grandpa? Do you think he's in trouble'?, asked Remmy.
'Maybe? But let's see if it is Grandpa though first'?, pondered Sammy.
He then felt a hard paw smacked his left butt cheek. 'OUCH'!, cried Richard, though he smiled soon afterward.
'Hey did you hear that'?, asked Sammy.
'I sure did. Let me try'?, replied Remmy.
He then smacked his paw on Richard's right butt cheek. 'OUCH'!, came the cry from Richard.
'Yep, that's Grandpa all right'., laughed Remmy.
'C'mon let's really give him something to say ouch too'., winked Sammy.
The two boys then kept slapping the huge butt with their paws, Sammy on the left and Remmy on the right.
'OUCH, OW, OW, OUCH'!, cried Richard as he felt his grandsons smack his ass quick and hard with their paws. 'OW, OUCH, OUCH, OW'!, he continued.
Soon the boys were staring at a very red behind owned by their Grandpa, both looking proud of their work.
'I think this looks like an improvement on his butt'., said Remmy.
'Yeah red really suits him'., added Sammy.
Just then they heard footsteps coming from the direction of the main entrance of the cave.
'Quick hide'!, exclaimed Sammy as he and Remmy hid behind some stalagmites near where the now fleshy red butt resides.
The two boys peeked from behind them to notice their dad; Matt and the Boss enter the cave.
'Huh? I could have sworn that I heard voices from in here'?, pondered Matt.
'Hey Matt, do you see what I see'?, asked The Boss, when he saw the protruding red bottom before them.
'Yeah, it looked like somebody spanked that ass good. But let's have some fun with it ourselves shall we?', winked Matt.
The Boss nodded in agreement and soon the two began to smack Richard's ass hard too.
'OUCH, OW, OW, OUCH, OUCH, OW, OW, OUCH! OOOH those boys have really strong paws. OUCH'!, cried Richard to himself, as his stiffy grew longer and harder.
Inside the cave, the boys were giggling to themselves at the silly sight, and seeing their grandpa's ass getting redder and redder.
'OK then, I think we better give this poor guy a helping paw out of this situation'., said Matt.
He pulled down his shorts to reveal a stiffy of his own and slowly inserted his erect dick into the warm butt cheeks of his father.
'MMMM I don't know if that's Remmy or Sammy but they are sure big'., Richard said to himself, as he felt the cock slowly being pushed into his butt, who is unaware that it's now his son and his employer who were now on the other side of the cave.
'Don't forget about me'., said The Boss. He pulled down his shorts and then wedged his own boner into the butt cheeks of his friend.
'Now how can I possibly forget about you'?, smiled Matt.
The Boss began to hump Matt, while Matt began humping the sore ass of his father.
'Boy, whoever this guy is feels really tight'., grunted Matt.
'Oh really...Cool'., added The Boss.
Outside, Richard was really enjoying himself.
'MMMM Whoever it is that's in my butt right now, he feels good'., he smiled.
Behind the stalagmites, the boys eagerly watched everything that's going on, as both are stroking on their tiny little cocks.
'Watching Dad and The Boss push-plow Grandpa's butt sure looks fun'., said Remmy.
Sammy just nodded in agreement as he kept tugging on his tiny dick.
'OH MATT! I'M...I'M GONNA...'!, cried The Boss, before he unloaded himself right into Matt's ass.
'So am I...AAHHHH'!, cried Matt. He unloads his semen right into the tight ass of his father.
'Oh that feels good'., Richard said to himself outside, as his stuffy squirted out some semen of his own.
Richard then began to pull his butt lose from the hole, and after a few attempts he got it free, after The Boss helped to pull Matt free from his dad's ass. Richard then took a peek inside the hole to see who it was that plugged up his anus, only to get a bit of a sudden shock when he discovered who it really was.
'HUH? You two...Where are the boys'?!, exclaimed Richard.
'DAD?! That was you?!....I had no idea. But I don't see the boys anywhere. I don't think they are in here'., replied Matt.
'Well then I'm going to have to teach you a lesson. You too Boss'., said Richard.
'Huh? What did I do'?, asked The Boss.
'No doubt you were humping my son while he was humping me and I doubt you know where the boys are either'?, asked Richard.
The Boss gave a sheepish smile as he didn't know where they are either.
Richard then entered the cave and found a small stone to sit on, as the cold emitting from it would cool down his sore butt. He then put a half naked Matt and The Boss on each side of his legs and began spanking their bare bottoms.
'OW, OUCH, OW! Great idea Matt'!, complained The Boss.
'I'm so sorry. OUCH, OW, OUCH'!, cried Matt.
Over by the stalagmites, both Remmy and Sammy, still hidden from view, were laughing with joy at the funny sight as a naked Richard was spanking their Dad and the Boss and knowing full well that they got away with spanking their own grandfather. Even if it was for a little while.

The End.