Donnie's just taken another sip of coffee and is patiently waiting for the screen to stop blurring when the door to the lab groans open. The person entering doesn't speak, and he knows who it is even before they silently creep across the floor to nuzzle his leg, ears brushing against his skin.

"Mrrow," a little voice says.

Donnie groans, rubbing his eyes. "Not now, Mikey."

"Mrrow." More firmly this time. Donnie reaches down to push his brother's head away. He pushes back, rubbing his ears up against Donnie's sigh.

"I said later." Silence. Mikey pulls away, but Donnie still keeps his eyes on the screen, willing himself not to look. He hears the creak of weight shifting onto a nearby counter and rolls his eyes. "Mikey..."

"Mrrow!" A hand bats across his board, dangerously cross to his mug, and Donnie snatches it away with a hiss.

"Jeez..." He looks up to see his brother perched on the counter, glaring at him. Mikey's naked except for his band of soft orange ears, the purple collar clasped snugly around his neck, and far-too-adorable pout.

"Off," Don says firmly, leaning over to shove him off the counter. Mikey lands easily, of course. He gives Donnie a disdainful sniff and starts to crawl away, lifting his tail as he goes.

Lifting his tail, because cats are pathological about showing off their asses and Mikey has obsessed enough about cat behavior to know this. But also lifting his tail so that Donnie can get a perfect at the cute little plug holding him open. A fluffy plug, adorned with a puff of orange fur that flutters ever so slightly as Mikey waggles his tail.

For fuck's sake. Donnie takes another sip of coffee before rubbing his eyes with a groan. "You're a manipulative little shit, you know that?" The very sight of his little kitty stuffed up like that is enough to make his slit ache, and the fucker knows it. "I should get you neutered."

Mikey just settles back on his haunches with a triumphant grin, refusing to fucking break eye contact as he lifts his leg and curves his neck. He very slowly and deliberate drags his tongue down his thigh, challenging, daring...

"Fine." He's not getting any work done with that in his head. Donnie shuts off the computer and goes to scoop his kitty up, cradling him to his chest as he makes his way out of the lab. Mikey nuzzles Donnie's chest, letting out happy little churrs that go straight to Donnie's dick.

"Yeah, yeah, you win," Donnie mutters, slipping into his bedroom. He sets Mikey down on the floor and engages the locks while his brother crawls to the bed, still wagging that damn tail.

Donnie stretches out with a groan--man, he really had been in that chair for a while--before settling back against the headboard. He finally lets himself drop down as he spreads his legs, giving Mikey an expectant look. "Well? Come get some milk, kitty."

Mikey scampers forward eagerly, running his clever little tongue on Donnie's head, and Donnie arches his back with a sigh. It's so good, he's tempted to just turn his brother off and let his brother take care of him, but then he notices Mikey starting to grind his pelvis against the sheets.

"Hey!" Donnie leans forward and slaps his brother's rump. "Stop that!"

Mikey lifts his head, the words slipping out before he can stop them. "But dude--" He slaps his hands hand over his mouth, but it's too late. Kitties aren't allowed to talk.

Donnie raises an eye ridge and Mikey turns around, lifting his rump in the air for punishment. Donnie gives him five quick spanks, two on each cheek, and one directly over the whole. They're light, barely love taps, but Mikey still whimpers and squirms in a way he never would if he was really scared or hurt.

When he's done, Donnie rests his hand on his brother's backside. "You're going to have to wait for pleasure after teasing me like that," he says firmly. "Understand?" He pauses, giving Mikey time to think it over and safeword out if need be.

But instead a sparkle flashes into his brother's eyes, and he pushes his rump back into Donnie's hand with an acquiescing meow.

"Good," Donnie says. "Now get back to work." And Mikey does, rolling back around and lifting his ass safely away from the blankets before plunging his head back between Donnie's legs.

Donnie's always known his brother had a talented tongue, one honed form endless years of chatter and tale-spinning. But it wasn't until their relationship took on this more intimate form that he upgraded his rating from talented to Darwin-damned prodigious.

Mikey was a wonder when they first got started and careful practice--turns out all they really needed to get him to apply himself with inspiration--has made him ever better. He sets to work with an arsenal of dainty little laps and hard, abrupt sucks, occasionally pausing to nibble with that hint of teeth Donnie loves.

All to soon Donnie's shaking and churring, unable to help himself, and Mikey churrs back, which makes everything so much better. Beads of precome form on Don's cock; Mikey laps them up, an expression of unmistakable pleasure on his face. "Shell," Don whispers, reaching down to grab his collar with a hiss.

Mikey stretches it out for as long as he can, teasing Don like the proverbial fucking cat with a mouse. But eventually Don can feel the climax approaching and lets out a soft grunt, hurriedly reaching down to push his brother away.

His little kitty tumbles back onto his heels with a squeak, giving Donnie a very nice view of his brother's trembling cock. Mikey wipes his mouth, a bit of hurt in his eyes, but he vanishes when Don spreads his legs with a devilish grin.

"My lap's so warm, kitten," Donnie teases. "Don't you want to come and rest?"

Mikey does, very much. He turns back around and shoves his ass back into Donnie's face, mewling piteously.

"Oh, all right," Donnie says, reaching down to very carefully pull out of the toy, ignoring his brother's impatient mewls and his own aching cock. He wants them both to savor this.

Donnie's hand is barely clear when Mikey's sinking down on top of him with an impatient yowl, engulfing him with tight, wet heat. Donnie leans forward, sinking his teeth into his brother's scruff and shaking it playfully while his free hand creeps down his brother's plastron, encircling the base of his cock.

"Does little kitty want to play with his toy?" he asks lightly, trying to keep the trembling out of his voice. And little kitty does, bouncing up and down on Donnie's cock so that his own length slides back and forth through Donnie's hand. They let out twin wails of pleasure, arching into each other's bodies.

Donnie weaves his fingers through his brother's collar and yanks him close. "G-good," he rasps. "My sweet, sweet little kitty. I love you so much, kitten." Mikey slams down again and Donnie's hand squeezes reflexively, white ropes of cum spasming over his fingers.

"Good," he gasps out, and then he's rattling through his own orgasm, the world melting into an orange-and-green blur of pleasure. He sinks back against the pillows and pulls his kitty down with him, nuzzling his face against Mikey's ears.

For a while they just drift together, in their haze of peace and unity. Then Donnie feels his kitten slowly rolling off him and settling down besides him, pulling off the headband and collar.

"Love you too, Don," Mikey whispers, pulling him into a kiss, and the only reply Donnie can give is a churr.