Regulus held up his hand and whispered a simple no thank you, his skin already flushed and taut with his indulgences of earlier. Both brothers had overdone it during the cocktail hour beforehand ― Sirius perhaps even more so by the look of him. They'd been nervous, and rightly so, but Regulus wanted to keep his wits about him as best he could in case matters took a turn. There was always a hint of danger in these games they played ― but really, that's what they enjoyed about it most of all.

By the time he'd returned his attention to the table, Regulus could see Sirius turning to Great Aunt Cassiopeia, stammering a reply to her questioning of his post-graduation career. No no, that wouldn't do. He still managed to speak at all. Regulus would have to do something about that.

It wasn't the trickle of magic through his fingertips that told Regulus the plug had begun to move. It was the way Sirius suddenly arched in his seat, fumbling with his fork before finally deciding to set it down. For a moment so brief he might've imagined it, Sirius' dilated eyes focused on him, a teaspoon of indignation mixed with his pleasure. Regulus resisted the urge to wink. Sirius should've known better than to bet against Slytherin when it comes to Quidditch.

Sirius was trying his best not to react further, but even from underneath the table, Regulus knew his hips were moving, no matter how slight. He hadn't been permitted to watch Sirius insert the plug earlier that evening, but he'd stood outside the bathroom door waiting, and it hadn't taken him long. Sirius had been ready for it; he'd been blushing with lust, rather than shame, ever since. Regulus' already needy cock thickened another notch more beneath his starchy robes. He was going to need some private time when dinner was finished. He could probably get out of cards without much of an excuse. They'd be glad to be rid of him, to be honest; he won too often for their liking. Maybe he'd be able to convince his brother to watch him again. Who was he kidding ― Sirius would make him beg for it, if only to hear the sound.

Sirius bucked in his seat. He was getting close. Regulus could practically feel the shivers running down his brother's spine. He'd been teasing him all night, it was only a matter of time. He watched as Sirius' eyelids fluttered, his bottom lip slackening before being snatched back by his teeth.

Regulus wanted to touch him. They didn't do that ― no, they'd kept that wall between them as sturdy as they could, barely connecting even when they did, as if through the smallest crack in a window. Another thing about this they couldn't name, though they felt compelled to uphold. But Merlin, he wanted to. He thought of the way the toy must be moving inside him, wondered filthily if those on Sirius' side of the room could hear the lubricant squelching around the intrusion, curious but not enough so to bother investigating. Regulus would overturn this table just to reach him if he could, to see it for himself. Wouldn't that be a sight ― the look on their father's face, the shriek of their mother's voice as they rut together in a mess of broken china and smeared gravy.

In a moment beyond his control, Regulus twisted the wand at his wrist once more, sending ― what he hoped to be ― a buzz through the toy inside his brother. He knew the spell had struck true when Sirius suddenly gasped aloud, one hand shooting out to smack against the tabletop. As each head suddenly snapped to attention, all eyes peering at him over their forgotten plates, his body convulsed for several seconds before relaxing into mild tremors, his hand balling their perfectly white, lace tablecloth into his fist to hold him steady.

Their mother was quick to speak, as always, her tone shrill and offending. "Sirius Black, what on earth is the matter with you?"

"I'm just. Uh." Sirius' voice broke on a high note. Regulus could see his fingers tremble as he gently released the bit of linen crumpled in his grip. "Need the lav," he finally managed after a moment, accompanied by a snort from Uncle Cygnus at the choice of words. "Excuse me."

The rest of the table appeared to hover on the edge of hysterics at the impropriety, but in the end their mother waved her hand in blessing. Sirius waited not a beat more before quickly sliding his chair back and clambering to his feet. The others returned to their meals, their grandmother calling a house-elf over to pour her another glass of wine in a feeble attempt to ignore Sirius' outburst, although they all knew her to be the lightest drinker in her old age. Uncle Cygnus engaged their father in a frank discussion about the most recent appointment to the Wizengamot, to which of course several of the men at the table felt the need to join in.

And somewhere in the middle of it all, Sirius' eyes found his. Regulus swallowed thickly, his composure betraying him for the briefest of moments, before his brother was gone.

As soon as the door to the dining room had shut behind him, their mother gave a little sniff and turned to Regulus to announce in a hushed tone, "I must say, I'll never understand that boy."

Regulus thought ― with a smirk concealed by his water goblet ― that she was better off. Because had any of them bothered to notice the wet spot darkening the front of his poor brother's robes as he trotted away, well it might've just put them off their pudding.

Oh, UNF!! Super hot, and I really loved the dynamic between them! Regulus's POV was really great and there were so many wonderful little details and bits of characterization here that really stood out. :D

Yay! I've never written Regulus before, and I've written Sirius very very little, so I'm glad I was able to turn it out. Thank you so much!

Oh. My. God. This is just so perfectly dirtyhotwrong and I love it. Absolutely love it. The way you've written Regulus is amazing, and I really like how you've defined his relationship with Sirius - that they'll do this but not touch each other is so wonderfully in character for both of them (and so very kinky, I like it).

Thank you so much for filling my prompt with this slice of perfection.

Yay! I'm so so glad you liked it! To tell the truth, this is the first thing I've written in over six months, so I was nervous about it - but I'm so glad it was to your liking! Thank you so much for inspiring it with your prompt.