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Leonardo purposefully withholds his moan as the next few successive thrusts of the cock inside him send his toes curling. He swallows the excess saliva in his mouth before throwing a smirk behind him, cocky and brazen and guaranteed to rile up his mate.
“Is that—ngh!—all you’ve got?” Leo goads in a patronising tone. But he knows his front is weak when his voice sounded this breathy. Donnie would have most certainly picked up on that as well.
“You little brat.”
Leo gasps at the sudden sting on his thigh, following the last echoes of a loud smack. Under the ravaging hormones of lust, the heat of the pain swiftly morphs into pleasure.
“I was nice enough to drop all of my work to entertain you and this is what I get?”
Leo cries out when his head is yanked backwards by his mask tails. His body arches awkwardly, hands still pinned to the table by a pair of mechanical arms from Donnie's spider shell. Leo shivers upon feeling hot puffs of air over his ear.
“If I had known that I would be getting this attitude for my kindness in the first place, I would have tied you up, strapped you to a dildo and make you come over and over until you beg for me to stop,” Donatello hisses, punctuating his irritation with a sharp nip on his mate’s neck.
A frisson of heat blooms in Leo’s abdomen. He moans and can’t resist tossing a cheeky retort to his twin, “Is that a promise, papi?”
Donnie growls. He releases his grip on Leo’s mask before planting both hands on his hips. “I must have been doing a poor job of fucking you if you can still speak,” Donnie snarls, pulling out and ploughs viciously into the other turtle. The force he uses rocks the entire table, sending items clattering to the floor. Leo closes his eyes and churr, limp under the onslaught of pleasure.
A shrill noise breaks through the haze of their frenzied coupling a few moments later, causing both brothers to freeze. Leo identifies the sound as Donnie’s ringtone, originating from a purple phone which had miraculously stayed on the table despite the shaking.
Donnie stares at his phone for a beat before turning his gaze to his mate.
Leo gulps at the devious smile creeping onto his face. “Donnie, wait—”
Too late.
From the shell on his back, a long spidery limb emerges, identical to the ones clamped on Leo’s wrists. The metal arm reaches across the table, plucks the phone from its spot and drops it beside Leo’s head. Donnie briskly taps on the green button on the display and places the call on loudspeaker. “You’re conversing with Donatello.”
“Donnie! Oh, thank God—you gotta help me with my math homework, man! I’ve been stuck on these algebra problems for hours now and I’m ready to scream!”
April. Their honorary sister is on the phone.
Donnie hums, staring down his snout at his prone mate. “Send me a picture of the questions as well as your answers.”
Leo gawks at his twin. He can’t be serious about doing math now, right?
‘Stay quiet unless you want her to find out.’
Wait what?
Leo barely has time to think about Donnie’s statement before his twin is pulling out his cock and thrusting back into him, striking unerringly at a spot that electrifies his nerves and whites out his vision. Leo bites down on his lip and contracts his throat, concentrating all of his fragmented willpower on not making a sound. Donnie—the menace—takes it as a challenge and speeds up his pace.
“There, sent!” April’s voice burst through the phone.
Leo couldn’t hold back a strangled whimper when Donnie stops moving. His claws dig into the table, hips bucking wildly for any form of stimulation to throw him off the precipice to his orgasm. A weight settles across Leo’s back, pressing him further into the table and putting a halt to his movements. A cry of complaint bubbles up in Leo’s throat.
“Hmm...” Donnie pulls his phone in for a closer look, subtly grinding his hips against his mate’s.
Leo clenches his eyes shut and tastes iron on his tongue when he swallows a frustrated whine. ‘Donnie, please. Please, please, please,’ he begs through their mind-meld.
Dark amusement greets him.
‘If you come before I’m done with these problems, there will be consequences.’
Leo hopes the small keen that escaped his mouth had not been picked up by the phone’s microphone.
There are four questions in total. As Donnie patiently coaches April through each solution, he alternates between hard, forceful thrusts and slow, torturous rolls of his hips. Leo would have found his twin’s restraint and ability to multitask hot if he isn’t driven to the brink of sanity by his desperation for release.
When Donnie finally arrives at the last question, Leo’s willpower is in tatters. His breaths come in soft, hiccuping sobs behind his gag, fashioned by Donnie’s Ninpo to prevent him from hurting himself more when he bit his arm to stifle his noises. Twice now Donnie had asked if he wanted to use his safeword. Twice now Leo had said he could continue, trusting his twin to know his limits. Never let it be said that Donnie doesn’t care for him.
“And we’re done! Finally! Why the school thinks algebra would be useful for journalists is beyond me. Thanks so much, Donnie, I owe ya one!” April cheers through the phone.
“It would be my pleasure, m’lady. Now, is there anything else I can assist you with or am I free to end this call?” Donnie thinks his voice sounded clipped at the end when the urge to orgasm clawed back to the forefront of his mind now that he has nothing else to distract himself. He takes in the panting mess beneath him, glassy-eyed and drooling, twitching from oversensitive nerves. Donnie aches to sink his teeth into the long supple neck of his mate, to taste the sweet tang of his blood.
He wants to fuck the living daylights out of his Nardo and stuff him with so much seed it will be dripping out of him for days no matter how much he cleans himself.
“Nah, I won’t want to take up any more of your precious time now,” April teases good-naturedly, unbothered by his cold response. “Talk to you later, Donnie!”
“Fare thee well, April.”
Donnie had barely waited for his honorary sister to hang up before he is ploughing into Leo, dissolving the gag in his mouth to hear his screams.
His mate doesn’t disappoint, babbling nonsensical words between moans and cries of Donnie’s name.
“You did so well holding yourself back there, my champion,” Donnie croons into Leo’s ear as he thumbs his slit, dipping a finger past the already stretched skin encompassing his cock. “Such a good boy. Now come for me, my sweet.”
If there’s one thing guaranteed to break his mate’s resolve, it’s praise.
Leo lets out a garbled yell as he came, head thrown back and face twisted in pleasurable pain.
It is that and the rhythmic clench of the hot, slick muscles around his cock that pushed Donnie to his own peak. He clamps his teeth on the back of Leo’s neck, satisfying the animalistic side of his brain that demands he claims his mate. Leo churrs in response, keeping himself still and submissive.
The two of them stay tied together for a few more moments as they came down from their high. When Donnie feels his erection start to soften, he carefully pulls out of Leo and releases his neck, guiding him to the floor.
“Oh God. Oh God, I can’t believe we just did that,” Leo gasps, too jelly-limbed to move from his twin's lap.
Donnie nuzzles against his temple. “On a scale of one to ten, how much did you like—”
“A hundred. One fucking hundred and a please do it again.” Leo’s eyes are glittering with arousal when they look at him.
“Next time,” Donnie promises, mind already swirling with innumerous possibilities.