"Welcome to clone club," military John announced to the assembly of clone Johns and clone Sherlocks, "original Sherlock and John will be back soon so we need to vote on how we want to proceed before they get here. All in favor of having an orgy say aye." "Aye!" shouted the entire assembly. "All opposed say nay," military John said and found there was no objection. "That settles it," blue dressing gown Sherlock said jumping out of his chair, "when our originals get home we fuck!"
Original Sherlock and John returned home to chants of "fuck, fuck, fuck" coming from upstairs. "I told you leaving them alone in the flat was a bad idea," John told his lover as they went upstairs. They didn't even have time to get their coats off before the clones were carrying them towards the bedroom intent on having their way with them. Sometime during the foreplay original Sherlock and John managed to escape and call Mycroft to beg for help to ridding the flat of it's clone infestation.
Sherlock, control your experiments PLEASE!