Rick and Morty: Grandpa's Big Baby (Private with Firedreake19)
 

Rick had just finished another late night experiment. He was tired but he was hoping Morty would enjoy it when it was finish. Thankfully he finished the entire project tonight. It was an entire nursery in Mortys size. He had already gotten Morty to enjoy wearing diapers, however he just stuck to plain designed diapers. They werent great at holding much, so Rick got a lot of baby designed diapers in Mortys size which would hold so much more. With a tired smile, Rick made his way to Mortys room and opened the door. "H..Hey Mort-Mort? You up l..little guy?" He asked.

It hadn't been hard at all for Rick to get Morty to like the diapers he currently wore. He had just left one out and out of curiosity Morty had tried it. A couple months later Morty could hardly make it to the bathroom on time and had let his grandpa on the fact he was wearing diapers almost full time. On some occasions he had even asked the man for help changing. More babyish behavior had come from wearing the diapers from nighttime accidents to spilling his drinks and needing to use sippy cups even though they didn't have any. Since it was late at night Morty had been fast asleep when Rick had finished the experiment that was his nursery that Morty had no idea about. He was laying in his bed sucking on his thumb in only a t shirt and wet diaper. He heard Rick's voice and woke a bit. "Hmmh?" He mumbled very drowsy. "Whats going on?" He asked thumb still in mouth rubbing an eye.

Rick chuckled and smiled as he sat on Mortys bed. He grabbed the boy and cradled him while squishing his soaked diaper. "Little guy you really flood these things" he teased. "Grandpa finished something for y...you baby boy" he added. Rick gently pet Mortys head and bounced him gently. "Would you like to see?" He asked.

Morty had to try hard to stay awake with it being so late at night and then Rick cradling him like a baby wasn't helping much. With the hand that wasn't in his mouth he held onto Rick's shirt blushing and squirming a bit when his very wet diaper was squeezed. He let out a small whine of embarrassement at the teasing sucking his thumb harder. However his grandpa calling him baby boy and petting his hair was enough to calm him down again. He gave a weak no at his question for sure not wanting to leave Rick's arms. "Please Grandpa Rick." He lisp around his thumb barely keeping his eyes open.

Rick smiled and kissed Mortys forehead gently. He picked the boy up and carried him out of his room. The two went down the call and into a secret room that Rick finished. He closed and locked the entrance to the room and turned the light on. The light revealed a fully stocked nursery in Mortys size. It had a closet with tons of onesies and outfits for him. It also had a playpen filled with toys, a changing table stocked with diapers, powder, lotion and oil. It even had a yellow crib with a mobile over it. It was also filled with stuffies for Morty. "What do you thing, soggy butt?" Rick asked.

Morty smiled at the kiss to his forehead still holding onto Rick a bit as the man carried him down to whatever this surprise was. Afterwards he hoped he could work up the courage to ask for a diaper change. Morty closed his eyes for a little not opening them until he heard Rick close and lock the door they came through. His eyes widened in shock at the sight of such a grand nursery. It had everything a baby could possibly need. Above his crib was the coolest mobile to help lull the baby to sleep. A night light could be seen in an outlet. He could even see a baby carriage, baby bouncer and high chair all his size. He was absolutely speechless. He could smell all the sweet smelling baby products and those babyish diapers looked so thick and more comfortable than his plain ones. "This is really for me?" He asked hardly believing it.

"Y..yeah it is, bud" Rick burped. He bounced Morty gently and kissed his cheeks. "Do you like it?" He asked. Rick could see the happiness in Mortys face and eyes. He gently put the boy down and helped him stand. "Explore and look around, its all yours baby" Rick said.

Morty was as happy as could be. The nursery was so nice and grand and everything he could have ever wanted. He giggled a bit at the kiss to the cheek pressing a sloppy one back to the man's cheek. "I love it Grandpa." He said honestly blushing as he was set on his feet. The wet diaper he had on sagged a bit from how wet it was and gave Morty a cute waddle. He took a few tentative steps towards the playpen first the toys looking like so much fun even though most of them were just baby toys.

"You are gonna need a change soon, super s..soaker" Rick teased. He sat back in a nearby rocking chair and watched Morty play. "Mort-Mort, Grandpas got a couple rules you g..gotta follow" He said. "First rule is, no more potty for you. All your accidents are going into your diaper, including stinky ones." He stated. Rick smirked as he looked at Morty. "Second, you WILL wear whatever I choose for you without fussing. And no matter how embarrassing or...frilly and pink it may be" He continued. "Third, I know your little boy parts feel good in your diapers sometimes, so you will only make stickies in your diaper when i allow you to." Rick said.

Morty already really needed a change his current diapers weren't very thick at all and if Morty even dribbled in a bit in said diaper he would probably leak, not that he knew that. He had managed to climb into the play pen sitting down in it with a squish. He grabbed the baby toy that you had to fit all the shapes into and started to try and get a square to fit in a circle hole giggling away. Rick's voice got his attention so he turned to look at and listen to his grandpa. He blushed as he listened to the first rule. He hadnt made any stinky diapers yet and was a little scared to as he didnt want to make a huge mess for his grandpa. His cheeks got more red at the second rule wondering what Rick could want to put him in. The final rule wasn't bad at all but still embarrassing. Morty had often gotten hard in his diapers but never acted on the feelings in his diapers. He was fine with all of these rules though and they were worth to be his grandpa's baby. "Yeth grandpa Rick." He said understanding the rules.