"What on earth are you talking about?" John demanded, glancing between Sherlock and the pair seated on either side of Lestrade's desk, speaking with one another in hushed tones.
"Just look at them, John. Is it not obvious?" Sherlock asked, leaning against the wall and crossing his arms and ankles. John focused on Lestrade and Mycroft once more, shifting slightly closer to Sherlock to get a better view through the window. Lestrade was speaking, and Mycroft was leaning against the desk, his arms crossed on the surface, listening with obvious interest. "Really look at them. Tell me what you see."
John did look. "They look just the same as they usually do." He paused. "Although, hang on. Why is Mycroft wearing a scarf? Scarves are your thing, not his." Sherlock hummed in encouragement. "Unless he's trying to hide something?" John's eyes widened. "And isn't that the same shirt Greg was wearing yesterday?"
"Looking a bit more pressed than it did yesterday, doesn't it?" Sherlock mused. "Almost as though he got it professionally cleaned, even though he doesn't put that much effort into what he wears every day." Sherlock sighed. "He must be rather attached to that shirt."
"What makes you say that?"
"Don't you see? It's a cheap shirt. Mycroft would have rather bought him a new one than allow him to keep the one he has on now. Mycroft is stubborn, so it must have taken quite a bit of convincing."
"Perhaps they both got lucky last night. It could just be coincidence."
John and Sherlock watched as Lestrade began to laugh and a smug smile appeared across Mycroft's lips. Lestrade leaned farther across his desk and laid a hand on the arm Mycroft had laying on the table and the elder Holmes brother winked at the inspector. Sherlock scoffed. "They aren't even trying to be subtle."
John's mouth opened and closed a few times in an attempt to say something. "Lestrade is gay? For your brother? Mycroft and Greg... Jesus, Sherlock, I didn't need to know that!"
"No, Lestrade isn't gay. Neither is Mycroft, for that matter. And last I checked, you aren't, either. And yet all three of you are sleeping with a man." Sherlock smirked as John's face turned red. "It's not unheard of. You of all people should know that. It just so happens that they care for each other more than friends usually do. That affection turned into something physical and has grown into a relationship that works well for both of them. Sound familiar?"
"Shut it, prat. You've made your point. Don't announce it to the whole of London."
"John, you aren't very subtle, either. If all of London doesn't already know, its because all of them are daft and deaf. The way you shout my name while we-"
"Sherlock!"
"Now, shall we deduce who fucked who last night?"
"Sherlock!"
Just a short little one-shot. I admit that I actually had a lot of fun jotting this one down. The idea that Sherlock deduces these kinds of things in his head without really thinking much of it has been something that's intrigued me ever since he pointed out that Donovan was scrubbing Anderson's floors in the very first episode. And of course I'm a huge Mystrade shipper, too, so this just had to happen. Please leave a review and tell me what you thought!
