"I'd heard they were good there, but my god." Mycroft said, astounded, looking over the figure standing in the kitchen, quietly sipping at a cup of coffee while Mycroft gawped and Sherlock just looked so very bored.
"Apparently it's an early birthday present. John says that if I need someone to bounce ideas off when he's not here, then I'm meant to talk to the other John instead of insisting he texts me back."
The other John nodded in agreement with Sherlock, and sipped a bit more coffee, still not speaking.
"That seems fair enough." Sherlock's pout at that proved he thought otherwise "But what about when John is here? What does the other John do then?"
"Housework?" Sherlock offered, not knowing the answer just yet.
"I'm not some kind of servant!" The clone blurted out, frustrated.
"Tell you what. When John is back, how about the other John lives with me? You've not really got space here for an extra person, but I do. John is tolerable; I imagine his clone is pretty much the same?" Mycroft mused, looking over at the clone for support.
John's clone nodded enthusiastically, returning to sipping his coffee and not saying anything.
"So the other me is going to live with Mycroft for most of the time?" John asked upon his return, finding his clone to be gone and fearing that Sherlock had been running experiments and had the other John in plastic bags in the fridge.
Sherlock nodded once as a reply.
"Okay. I guess one of us should have a fridge stocked with human food, and have money, and power." John said, more to himself than anyone else.
"Well, your other self may have all that, but he also has to deal with Mycroft. And Mycroft so fancies the other you." Sherlock said, taunting John until he shuddered.
"I'm not gay, so my clone isn't either, presumably, so Mycroft will have his work cut out for him." John rationalised.
Sherlock smirked.
"What have I missed?" John groaned in frustration.
"You're going to have to figure that one out for yourself." Sherlock said as he pulled on his coat and flounced out the door.
He stuck his head back round a few seconds later.
"Aren't you coming to see John Watson's boyfriend?"
And then Sherlock ducked to avoid the shoe that his John had just thrown at him.