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Donatello moved the chair to the center of the room. There was no other reason behind it other than it made it the main attraction of the area. He mused whether to play with the illumination but he didn’t want to make it so obvious to Leo’s observation skills that he was plotting something. In order for this to work, Donnie had to play subtle and he was going to succeed.
He was just uploading the file to his communicator when he heard the door opening and he held back a smirk. Five minutes before he was supposed to be here as predicted. He pressed a button to make sure the door would be locked since he didn’t want any interruptions for the night and exhaled, ready for what was about to come.
“So, what is it what you want to prove Donnie?” Leo asked, unaware that de door was now shut “you looked quite eager a while ago to show me.”
Donnie turned around and smiled at Leo.
“Oh nothing so serious,” Donnie said nonchalantly, pointing at the chair for Leo to take a seat “just that you are the worst at taking instructions not to mention, quite impatient.”
Leo placed a hand on his chest plate, “I am not, I can be as patient as one can be, like a monk.”
“Right, and you leaving the table while Raph was mentioning what we were planning to do this weekend proves it so well.”
Leo leaned back on the chair, spreading his legs in a way that made Donnie almost look down, but he kept his gaze on the slider’s face. He had to prove a point after all.
“A one-time thing, besides, we already knew what was going to be, you’re exaggerating.”
“I bet if I do the same you wouldn’t be able to stay on that chair until I’m done.”
Leo frowned.
“That sounds lame Dee, sorry to break it to you and as much as I love you, you get a little boring when you list out the things we have to do.”
“What?” Donnie smirked and placed his hands on the armrests, effectively trapping Leo in the chair “are you saying that the great Leonardo can’t sit through a simple list?”
Hook.
“W-what, I totally could,” Leo glared right back at him “With you? How hard can it be?”
“Not much, but I would understand if you wanted to back out of a challenge.”
Line.
“I will not,” Leo crossed his arms and leaned back in the chair “try me.”
Sinker.
“Very well then,” Donnie leaned back and walked back towards his desk to lean against it as he focused on his bracelet “an easy challenge as you say, you have only two rules, Nardo.”
“I know the first one,” Leo shrugged “don’t get up from the chair.”
“Exactly, and the second,” Donnie pointed at the armrests “you cannot move your hands away from them.”
“Yes, yes” Leo rolled his eyes and placed both hands on the armrests, “just get on with it.”
Donnie abstained himself from pointing out Leo’s impatience already showing and opened the file.
“Lucky for you, I only have ten points in this one, should be easy enough,” he cleared his throat and looked directly into Leo’s eyes. “It’s just a list of acts and situations that cause extreme arousal results to subject a-1.4”
“Subject a-1.4?”
“Element number one: Subject reacts to situations where he is, colloquially speaking put on the spot about his own libido in nonsexual situations, such as remarking how frequent he looks for sexual satisfaction, how often he resorts to begging, and how he cannot keep his hands to himself.”
He wanted to grin when he saw Leo’s eyes widen, the bob of his throat when he swallowed, and the way Leo’s legs tensed up.
“Now Donnie I don’t—”
“Situations that back this element include three days ago where the subject in question showed an increase in hormone counting when told, and I quote ‘if you do not stay still I’m going to make you beg for me to take you right against this wall.”
Donnie looked up to see Leo suppressing a whine. The slider was holding onto the armrest as intended, but his eyes were trying in desperate attempts not to look directly at Donnie. Leo caught up fast to what Donnie had in mind, he’d have to give him credit for that, but he was just getting started and Donatello was not going to go easy on the slider.
“Element number two: In a paradoxical way, subject in question is particularly aroused in response to positive words, especially such that fall into praising,” he smirked, “more frequently when it is noted his exceptional flexibility in endurance at the moment of intercourse.”
“Dee—”
Donnie looked up and tried to keep his face absent of emotion, but it was starting to turn difficult when he saw Leo squirming and clenching his thighs together. He could bet that chair would be soaked in no time, so he resumed to the next one.
“Element number three: the subject is particularly aroused to biting. This, in particular, extends not only from casual nibbling but full-on marking subject’s neck until bruises are formed that can last from twenty-four to seventy-two hours”
He moved away from the desk to approach Leo. On closer inspection, he could see that Leo was already aroused if he judged only how the slider averted his eyes and bit his lower lip, or how he kept clenching his thighs together, no doubt trying to create friction in between them.
“Evidence that backs up said element can be noted in subject’s left side,” he moved a hand to that spot, almost biting his tongue when his finger touched a now fading bruise on Leo’s skin. Leo shuddered and tilted his head, eyes fixed on Donnie as the soft shell pressed slightly on that spot “as well as the right side,” Donnie moved his finger to the other part where there was an even more prominent mark, grinning at Leo’s moan when he pressed on the sensitive skin. He was tempted to mark it more, yet he resisted. Donnie had to win this after all.
“Element number four: while the subject has not shown heavy arousal to masochism, he does exhibit increase in hormones at the result of spanking, preferably in the backside of his legs while also is in face down position.”
“Donnie—”
“Don’t interrupt Nardo, it’s not polite” Donnie turned to him “where was I? Oh yes, element number five.”
He could enjoy Leo squirming in that chair, the pride of winning a challenge against the arousal an interesting battle that Donnie admired every time he pressed Leo. He didn’t need to observe to know Leo was most likely a soaked mess in between his legs, but he was just reaching half of his list, he had time.
“Element number five: subject in question can and will show elevated levels of arousal when his tail is involved in the act of foreplay.”
Leo leaned his head against the chair and let out a churr. Donnie had to give him credit, even if Leo’s hands were gripping the armrest too tight, he was still in that position. But Donnie wanted to wear him down, he’d succeed in that.
“Situations that have proved successful in this point are,” he leaned close enough that he could whisper them on Leo’s ear bones “while being kissed subject is keen of his tail being caressed, while the subject is on hands and knees he will exhibit more arousal if the tail is tugged and pulled. Test on doing oral work on the appendage up to discussion.”
Leo shut his eyes and bit his lower lip again. To have him all worked out just by reading, Donnie could feel his own arousal increasing, his tail wagging at the sight of Leo restrained by his own pride. Come to think of it, the idea of restraining Leo was quite appealing already, he should write it down for another occasion.
“Which brings me to element six on this list, you are doing so good Nardo,” he smirked at Leo’s churr “in regards to other body parts, the subject is keen to have his legs touched, caressed, or spread, particularly the area of his thighs.”
He walked in front of Leo and nudged one of his legs apart, smiling at Leo’s whine when it revealed just how effective his list had been. Leo’s shorts were soaked, Donnie could tell easy enough. He wondered how much and if the slider was capable of holding like that but he could tell Leo was about to drop down and he wanted to see that.
“Element seven,” he took a step back and around Leo, one hand grabbing the tails of Leo’s mask and tugging it hard so that the slider would look up at him “subject reacts quite positively to being pulled around.”
As predicted, Leo let out a louder moan, his neck arched up in a way that would start to feel uncomfortable in a few, but Donnie focused more on his hands, how they were trembling and gripping to the fabric of the armrest.
Donnie let go of him and moved back to his desk to lean against it.
“Oh, I’m sorry,” he grinned “I forgot, in what number were we?”
Donatello knew his limits, if that didn’t work, then he’d have to give it to Leo and his stubbornness. But he was confident, he had played Leo like a fiddle and if his math was correct, Leo would give in in three …
“D…Donnie you kn-know,”
Two …
“Care to remind me?”
One …
He hadn’t even reached zero in his mind when he saw Leo jumping from the chair and taking two long strides towards Donnie, trapping his mouth in a hungry kiss, hands holding to his waist in a tight grip as Leo’s whole body pressed against Donnie’s, grinding so desperately Donnie found it difficult not to pull him away.
He indulged in the kiss, responding with the same energy to Leo’s needy lips, his hands groping Leo’s ass and tugging down the shorts.
As predicted, Leo was a mess. It took all of Donnie’s control to pull away and move a hand towards the soaked slit for Leo to churr and release his cock from hiding.
“You lost,” he grinned, aware that Leo was beyond caring at that point, proving his point when Leo just wrapped his arms around Donnie’s neck and ground his cock against Donnie’s hand, panting and huffing while he tried to keep balance on that position.
Donnie flipped them over so that Leo could be the one leaning against the desk, propping him up so that Donnie could spread those legs further and admire Leo’s cock twitching in anticipation. He took his time, kissing Leo fervently while his hands explored Leo’s thighs, a hand tugging at Leo’s tail and grinning when the slider moaned more in the kiss.
He pulled at it a few more times while his other hand moved to touch Leo’s cock. It was warm and slick with precum, Donnie knew Leo was very close.
“Element number eight,” he muttered in Leo’s mouth right as he squeezed the base, Leo whining as result “the subject can show high levels of arousal when he induces foreplay by himself before intercourse,” he grabbed one of Leo’s hands and extended it so he could put a bottle of lube on it “while his partner observes his ministrations.”
He pulled away and smirked. Leo didn’t dare to look up at Donnie, instead, he swallowed and propped himself more on the desk. Donnie had made sure to keep it clean from any important work, a perfect scenario for Leo to spread his legs and show Donnie the way Leo’s tail wagged. Leo, as Donnie predicted, didn’t look up at Donnie while he opened the bottle of lube and poured a copious amount on his fingers. He certainly didn’t dare to look up when he moved it lower to his entrance and started to touch himself around it, spreading the lube and moaning when he pressed a finger in and out in a slow, steady motion.
In fact, Leo didn’t look up to see Donnie until he started to mouth his name. Donatello still took his time to strip off his own shorts and coax his cock out, which didn’t take long but he just enjoyed the sight.
Donnie moved forward and took Leo’s hand away, lining up the tip of his cock against Leo’s entrance.
“Element number nine,” Donnie said, easing his way inside Leo’s entrance “subject will submit to arousal state when told to hold his orgasm.”
Leo clung to Donnie, his whole body trembling as Donnie started to pick a pace, hips thrusting and creating an obscene amount of slapping sounds in between them but Leo was too busy moaning Donnie’s name over and over for any of them to care. Donnie took notice that Leo had managed to bend so much for Donnie that he was certain he could turn the slider into a living pretzel if he wanted to.
“Can you hold it a little more Nardo?” Donnie touched Leo’s cock with one hand, jerking his hand up and down at an erratic pace “or do you wish to cum already?”
Leo moaned and tried to look back at Donnie, his words a jumble of sounds in an attempt of him to have his release. Donnie enjoyed it and increased his speed until Leo’s body arched in a rather obscene way and thick sperm came out of Leo’s cock.
Donnie kept thrusting into him, the slider barely holding onto him with how sensitive his body was now, and whined just as Donnie came inside him.
Instead of pulling out, Donnie grabbed Leo’s face and gave him another long kiss. He pulled out in the middle of the kiss and enjoyed Leo’s whine when he did.
“Don’t worry Nardo,” Donnie smirked and pulled Leo off his desk, the slider’s legs wobbling as he leaned onto Donnie for support “you’ll get to sit still one of these days.”
“You’re a pervert,” Leo grumbled, but he wasn’t pulling away from Donnie as the soft shell guided them to the showers “a massive pervert Dee.”
“And yet you loved it.”
Leo rolled his eyes but smiled, which was a bonus for Donnie.
“Hey, what was the last element of that list?” Leo asked just as Donnie opened the door of the showers.
Donnie hummed and gave Leo’s tail a light pull, smirking at Leo’s gasp, a clear indicator he could go for another round.
“Wouldn’t you like to know?”