Work Text:
With a happy hum, Arthur knotted his tie and looked himself over in the mirror.
Walking into the kitchen his mouth went dry. There with his back facing Arthur was Merlin, happily singing along to the radio. In The Skirt and a pair of heels.
“Get your boy on his knees, and repeat after me, say... ‘take a sip of my secret potion, I'll make you fall in love. For a spell that can't be broken, one drop should be enough… Boy, you belong to me. I got the recipe, and it's called black magic… Take a sip of my secret potion, one taste and you'll be mine. It's a spell that can't be broken. It'll keep you up all night. Boy, you belong to me. I got the recipe, and it's called black magic…’” sang Merlin, swishing his hips as he buttered toast and poured milk into tea.
Merlin had a couple of skirts in his wardrobe (he’d never been afraid of dressing androgynously), some of which were suitable to be worn in public, and others that were very much not. This fell in the later category. A frilly white number—practically translucent—giving Arthur the perfect view of Merlin's pert arse, lifted by his heels.
He should have known really. Merlin had gone five days without shaving. That always meant trouble.
The best kind of trouble.
The sort of trouble that had Arthur aroused the whole day. Sometimes even requiring a dash to the bathroom at work for a quick wank until he could get home and Merlin would let him bend him over the sofa and fuck him in that delicious frilly skirt and heels.
Arthur tried to retaliate with his own stubble and lingerie combo, knowing how much it turned him on when Merlin did it. But his stubble took weeks to properly establish, much to his dismay.
Merlin often laughed at him. Patting his cheek and telling him, "It's okay, babe. Now your face is as peachy as your bum."
But none of that really mattered when Merlin was shaking his arse, singing that song and wearing the outfit.
Arthur crowded Merlin against the counter and pressing his crotch against Merlin’s tulle covered arse.
“Morning,” he murmured in Merlin’s ear.
“Hey,” grinned Merlin.
He turned in Arthur’s arms and pressed a plate of toast and a mug of tea into his hands, taking his own to the table.
“Up to anything fun today?”
Arthur wasn’t really listening, his eyes torn between staring at Merlin’s delicious stubble, his bare chest dusted with dark hair, or his delectable cock through That Skirt. He was the perfect contrast of masculine and feminine.
“I’m just going to work,” Arthur announced.
He knew how this game worked. He was not going to get anything before work.
Merlin gave him a little wave as he tucked into his toast, apparently unconcerned. Except that Arthur could see he was nursing a semi. At least he wasn’t the only one who'd be suffering today.
***
At work, Arthur opened a new tab on his computer as soon as he arrived. He logged into their private webcam. Technically it was the doggy-cam, to keep an eye on Killy and Aithusa when they were both at work. But today Arthur was going to use it to watch Merlin.
He gasped as he looked at the screen, moving his mouse to change the camera angle and zoom in.
Merlin wasn’t was he…? Except that he was. Sprawled out on the sofa, Merlin had his legs parted with one hand on his cock, whilst the other was pumping their bright pink dildo in and out of his hole. As the camera moved, Merlin looked up, staring directly at Arthur, giving him a devious smile. Merlin tipped his head back and started putting on a show for Arthur. Jesus Christ... the way that stubble defined Merlin’s chin ought to be illegal. To say nothing of his cock, his arse, his—
“Arthur?” asked Gwen. Arthur jumped, slamming his laptop closed. “Your 9:30 is here.”
Fucking clients.
***
As he arrived home, Arthur rang the doorbell. He couldn’t wait to ravish Merlin. He’d do it here right on their doorstep if necessary.
The door opened, and Merlin’s grin lasted all of a second before Arthur pushed him inside. He shoved Merlin against the wall, kicking the door closed behind him as he snogged Merlin hard.
“Fuck. You. And your slutty. Fucking. Teasing,” Arthur said, almost feral between kisses.
He manhandled Merlin into the room and threw him over the back of the sofa, his hands pushing up the skirt so that Merlin’s perfect, perfect arse was finally in his hands.
He ripped his trousers open, his cock hard and ready as it had been for his entire commute home.
“Need to punish you,” Arthur growled.
He slid his hand between Merlin’s cheeks and tugged at the plug he’d had to watch Merlin put in, extracting it. Then lining up his cock, Arthur groaned with relief as he pushed into Merlin’s hot, tight hole.
“God, Merlin,” Arthur panted. “It’s been the longest day, you don’t even know.”
Merlin reached back, tugging on Arthur’s thigh. “Well, don’t just stand there,” he gritted out. “Fuck me.”
Arthur snapped his hips, a hand wandering under Merlin’s skirt to wrap around his cock.
“Oh, I’ll fuck you alright!”
Arthur knew Merlin had been waiting for this as much as he had, despite all the relief he’d had from masturbating and using a parade of sex toys throughout the day. The best part of days like these was always when Arthur got home and fucked Merlin desperate and hard on the first available surface.
He sank his teeth into Merlin's long neck as he thrust hard and fast, marking Merlin as his. He knew that they wouldn’t last long. As he felt himself tip over the edge, his vision blurring, he reached for the chain connecting Merlin’s nipple clamps and yanked hard as they both came.