2.
It was raining, as usual, and it seemed all of the cabs in London had made an agreement to avoid Scotland Yard on their usual runs. So they were walking home, and it was raining and Sherlock was on a high and his happy mood had infected John.
"Did you see the look on Anderson's face? How could he have searched the cupboard three times and not seen a bright purple ornate pill box."
"Anderson is an imbecile, John. That's why." Sherlock was as close to skipping as a six foot two man who looked a little bit like an alien could get.
"Sherlock, I'm soaking wet." John complained, but Sherlock didn't care.
"Then take off your clothes." He said simply, trying to catch rain in his mouth, arms spread.
"Why are you so damned happy?" John asked, light-heartedly.
"Well, John, I just solved a case which others had deemed impossible and now I'm going to fuck you. Why wouldn't I be happy?"
And Sherlock looked so amazing in his drenched coat, drenched silk shirt, drenched hair, and John could see the water droplets on Sherlock's flawless skin, so he let them walk for a half a minute before asking the next question.
"When? Sherlock, when are you going to fuck me?" And he found himself being pushed into the nearest alleyway and up again the wall. What was it with Sherlock and walls?
But John didn't have time to think of that, because there was a sodden body pushed up against his and his pants were coming undone only just faster than his erection was forming and Sherlock was pushing him up. John secured his legs around Sherlock's waist as he felt the wonderful intrusion and Sherlock's already heavy breathing in his ear.
"Fuck John, you were so… amazing." Sherlock breathed raggedly, "When you found the box. Nnngg."
The groan was due to the fact he'd just sheathed himself inside John in one go. It was at that moment that John discovered that Sherlock's prominent hipbones were perfect for manoeuvring himself on when his legs were wrapped around them.
And so he and Sherlock were mating in the pouring rain in an alleyway, fully clothed and less then three blocks from the police station and as John clenched at the shirt on Sherlock's chest and leant his head back against the bricks, close to the brink of absolute destruction, he thanked any God that Sherlock existed.
Sherlock pulled out and let him down as soon as they'd both orgasmed – John about half a minute before Sherlock – and collapsed against him.
John shuddered into Sherlock, laying his head on his shoulder.
"You're the most amazing, daring, and stupid person I've ever met." He whispered, and Sherlock wrapped his arms around him.
"And I like you even though you're so predictable." Sherlock smiled against his ear.