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veryblushyswitch · 11 months ago

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Tinytello gets Tinytickles

Summary: Leo finds out that Donnie has experimented on himself again and turned himself into “Tinytello.” With the help of his brothers, he convinces Donnie to promise to never experiment on himself again.

Lee: Little Donnie (Tinytello)

Lers: Leo, Raph & Mikey

Authors Note: Based off of this adorable art! 💖 https://www.tumblr.com/snailsnaps/701662135198023680/i-couldnt-stop-thinking-about-this-prompt-from

“No! No! No! No!” The little version of Donnie yelled as his younger twin carried him under his arm. Well, I guess he was the younger one now. Physically that is. An experiment gone wrong had changed Donnie back into a small kid. He was still teenage Donnie, but his form was that of when he was around six years old. And now he was forced to go towards Raph’s room as Leo held onto his squirming figure.

“Oho no, Donton. I know for a fact Raph would love to see this.” Leo chuckled in a playful tone. Donnie continued to kick his little legs and try to escape. The sleeves of his hoodie, slightly longer than his arms, flapped along with his hands with each desperate attempt of freedom.

Leo shushed Donnie then knocked on Raph’s door, hiding Donnie behind his back. He walked in after hearing a “come on in.”

“You’ll never guess what I found dear hermano.” Leo smirked, making sure to keep a good grip on the still squirming Donnie against the back of his shell. Before Raph could guess, he heard a small grunt from behind Leo. “Uhh, Leo…” Raph stood up from his bed. “Please don’t tell me you stole a kid-“

“Why would I- Never mind. Look!” He exclaimed bringing Donnie out from behind his shell and holding him up for Raph to see. Raph gasped, only to then aww at his adorable little brother.

“Daww!! Look at little Donnie!” Raph gave Donnie a pat to the head. Donnie swatted at his hand before giving up and accepting the affection. “But wait, how did this happen? Leo, you didn’t do this to him did you?!” Raph pointed a stern finger at him.

“It wasn’t me! Little Donnie here was experimenting on himself again.” Donnie tried to protest, but Raph was way ahead of him. “You what?! Donnie, I thought we talked about this. This is extremely dangerous. You’re lucky you didn’t turn yourself into some other mutant thing. We don’t need to be more mutated than we already are.” Donnie huffed and crossed his arms.

“Oh relax! I didn’t die or anything. Now if you let me go, I can go reverse this and we can pretend this never happened.” Donnie tried to sound serious with his kid voice. It didn’t work. If anything, it made his brothers smile even more.

“Not gonna happen.” Raph started. “You need to learn to be more careful. Even though this experiment seems to be the most adorable mistake you’ve ever made.” Raph’s baby voice came out in the last sentence as his pupils grew three times in size. Leo nodded his head at Raph’s comment.

“I know right!! He’s just a little guy!” Leo nuzzled his cheek against Donnie’s. Donnie pushed at his brothers face, his legs trying as hard as they could to kick at Leo’s arms. “I am not adorable now put me down!!” Donnie yelled. He yelped when Raph took him from Leo. Leo pouted, but remained where he was, letting Raph have some time to reminisce about when they were little. Raph held Donnie in one arm, the other flapping in happiness.

“I REMEMBER WHEN YOU GUYS WERE THIS SMALL!! I wish you guys could’ve stayed like this forever!” Raph couldn’t help the tiny jumps on his heals. He was having cuteness overload and Donnie would be lying if he said he didn’t find Raph’s reaction to him a little adorable. It was still embarrassing nonetheless, but seeing his brother so happy over his mistake was better than anger. A smile crept its way onto his face when Raph lifted him up and spun around a little. Leo wished he could take pictures with his mind, he had unfortunately left his phone in his room.

“Hey, I heard Raph’s cuteness overload voice what am I missing?” Mikey said as he suddenly entered Raph’s room. He immediately eyed the tiny version of their brother in Raph’s arms.

“OH MI GOSH!!!!” Mikey exclaimed, quickly snatching little Donnie from Raph. “Aren’t you just the cutest little thing!” Mikey cooed as he hugged him close. His brother was just too cute! And the oversized hoodie and glasses weren’t helping Donnie’s case.

“I am not cute!! Now put me dohohown! Hehehehe! Mihihikey!” Donnie burst into squeaky giggles when Mikey started to prod at his neck. His shoulders scrunched up with each feather light poke.

“Oh my gosh- I think my heart is going to explode-“ Leo held a hand against his heart as he stared at the adorable sight. At the same time, Raph brought out his phone to take a video. Mikey moved from one side of Donnie’s neck to the other, Donnie’s small fingers only managing to lightly push at Mikey’s hand.

“Nohohoho! Stahahahahap! Hehehahaha!” Donnie squealed when the back of his neck was targeted. Mikey felt his heart absolutely melt. And that’s when Leo thought of a plan. A plan to make sure Donnie wouldn’t make this mistake again.

“Ohokay. Mikey will let you go…” Leo paused for dramatic effect while leaning down towards Donnie. “If you promise to never experiment on yourself again.” Donnie gasped through a giggle.

“Nehever! I aham a mahahan of sciehehehence!” Donnie managed to say as Mikey continued his light flutters to the back of Donnie’s neck. Leo smirked, knowing that was exactly the answer he was going to get.

“Well right now you’re a man, or boy I should say, who’s gonna get tickled until he agrees with us.” Donnie’s eyes widened. They wouldn’t- not while he’s like this- Oh who was he kidding. Of course they would!

“Noho wahahahay!” Donnie could never ignore the sweet call of the mistress that is science. Even if it did mean getting tickled to death while being in this form.

“I was hoping you’d say that hermanito.” Cue Leo’s classic smirk before he joined Mikey in tickling Donnie. Raph stood to the side, recording video after video and trying to keep his cooing quiet. Donnie’s laughter was proving to be loud enough to cover any comments he made anyway.

“Aww~ Does that tickle, Tinytello~” Leo teased, scribbling his fingers around and around Donnie’s little plastron. He made sure to give pokes to his sides every now and then to hear little Donnie’s voice crack with each squeal.

“Nahahahahahaha! *squeal* Stahahahahahap!” Donnie kicked his legs and switched between trying to grab at Mikey’s fingers and pushing at Leo’s hands. Neither was doing much for his benefit. His glasses were a bit askew on his face and the hoodie was doing little to nothing to protecting his sensitive shell.

“Rahahahahaph! Hehehelp mehehe!” Donnie tried reaching out towards his older brother, only for a sneaky finger to wiggle under his arm causing him to shriek and pull back.

Leheohoho! Knohohohck ihit ohohoff!” Donnie yelped as Leo’s finger remained “trapped” under the little turtle’s arm. Raph giggled before deciding it was time to join in on the fun. He set up his phone against some clutter on his shelf, making sure he was able to get everyone in the shot. He walked over to stand beside Mikey and grabbed onto the tops of little Donnie’s knees.

“NOHO! Rahahaph dohohohon’t!” Donnie was still trying to keep his other two brothers at bay. He knew he would give in eventually if Raph contributed to the antics. Mikey and Donnie paused their assault, giving him time to take a break.

“So Tinytello~” Leo bent down to gently talk into Donnie’s ear, knowing it was a sensitive place for Donnie. “Are you gonna stop being a menace to yourself? Or are you gonna die of adorable squeaky giggles. Your choice.” Leo chuckled at the way Donnie shook his head but couldn’t help but giggle at the whispers.

“Leo’s right, Donnie. If you don’t agree, we’ll just have to keep you like this forever and ever. Tickling you aaaallll night long.” Mikey punctuated his sentence with some squeezes to the back of Donnie’s neck. Donnie snorted and curled up best he could, unable to make any sort of comeback.

“And then we’ll have to tell April. And I’m sure she’d loooove to tickle little Donnie until she feels satisfied.” Raph started squeezing Donnie’s knees. A high pitched squeal followed by louder giggles filled the room. Leo lifted Donnie’s arm that was closest to him and slowly wiggled his finger towards the outstretched underarm. He snickered at how Donnie barely even tried to pull at his arm, accepting his fate and giggling his little heart out.

“All together hermanos!” Leo declared, his finger finally touching its target and wiggling away under Donnie’s arm. Donnie kicked and squealed and snorted and swore. His other arm flapping due to happy stimming and not really knowing what else to do. Mikey gave Donnie a big raspberry to the side of his neck and that’s when he finally brought out the white flag to wave in surrender.

“OKAY! OKAHAHAHAY! I GIHIHIHIVE! I WOHON’T- GAHAHAHAHAHA STAHAHAHAP!” Donnie lost himself in laughter when Raph interrupted him by quickly lifting up his hoodie and blowing a raspberry on his plastron.

“Sorry what was that? Didn’t quite hear ya.” Raph teased, blowing another small raspberry on his side. Leo continued to hold onto Donnie’s arm, the other lightly smacking at Raph’s head with the hoodie sleeve.

“I WOHOHON’T EHEXPERIMENT OHON MYSEHEHELF! NOHOHOW STAHAHAHAHAP! PLEHEHEHEASE!” Raph and Leo finally backed away. Mikey letting Donnie go limp in his arms, cradling his little big brother. Raph went over and grabbed his phone, ending the video and saving it to watch later. He turned back and saw Leo covering his mouth. Looking closer, he saw that Donnie had fallen asleep in Mikey’s arms. I guess staying up for hours experimenting then being tickled by your three brothers really takes it out of you.

“Aww, he’s so peaceful!!” Mikey whisper screamed. He lent down and gave Donnie a kiss to the forehead, tearing up when he saw the smile widen on Donnie’s sleeping face. Leo carefully took off Donnie’s glasses, walking alongside Mikey and Raph as all three of them took him to his room.

“Should we tell dad?” Mikey asked as he gently laid Donnie down in his bed. He grabbed the blanket and carefully draped it across Donnie. Raph shook his head.

“Let’s wait till the morning. Let the little guy sleep for now. Seems like he needs it.” Raph put a stuffed animal next to Donnie’s hands, watching as Donnie unconsciously grabbed it held it close. Leo put his glasses on the nightstand, being sure to check that Donnie was all tucked in all warm and cozy.

“Goodnight, Tinyello.” Leo gently whispered, giving Donnie a small rub to his back. Raph quietly snapped a few more pictures before having to be dragged out of the room by Mikey and Leo. The affects would wear off eventually. But until then, Donnie slept more than he had in a really long while.

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