A/N I'm so, so sorry. I started this with the best of intentions to make a nice fluffy kidlock story, and somewhere along the lines - about the middle of the third one to be precise - it turned into Holmescest.

That said, on to the smut!

There were many occasions in the Holmes household that Mycroft Holmes, the elder of the two Holmes boys, was heard to utter the immortal phrase 'For god sake, Sherlock, shh!' in an attempt to dissuade his wayward little brother from some piece of mischief or another. On this particular occasion however, Mycroft's words would go unheard by all but Sherlock himself, who was too busy making short work of his brother's clothing - having seen to his own before he hauled his poor, unsuspecting, currently desperately horny brother into this walk-in cupboard on the fourth floor - to pay the words all that much attention. Having freed his brother of the irritating garments, Sherlock grazed his teeth down the older boy's neck, trailing open mouthed kisses along his collarbone and finally chewing lightly on his left nipple. All the while he relished in the wild sounds he drew from his Mycroft, whimpers and groans and half formed pleas. Only they could make each other come apart this way, and it had been far too long since they had had the chance. The school terms had kept them apart, but no longer! Long fingers danced across soft skin, tracing familiar patterns among freckles as those freckles met with alabaster planes, came together in rhythmic pleasure. The pace and tempo of their dance was steadily increasing and, for a time, there was no sound but their combined gasping and the sounds of flesh on flesh. Then there was that blissfully, torturously elongated moment where there was only them and the pleasure they strove to share, before said pleasure crescendoed and they were lost to the waves. Set adrift together, floating on a sea of bliss.

End Note: Obviously, the cute fluffiness got in there on the last line. Well, it was never gonna go away completely! ;)