* Sherlock's beard is a dark ginger color, which surprised John the first time he saw it. Surprised him mostly because he didn't think that marble skin could produce a beard, much less one of such an extravagant hue. Sherlock tells John the color comes from his Black Irish heritage but John thinks it's more likely an act of will, that Sherlock had made his beard that rare shade because he likes being different.
* John does not snore, John has never snored, John is blessedly snore-free. However, John knows someone who does snore, but he is never again going to tell that someone that he snores because that someone, who has a surprisingly fragile ego, will deny the fact in the strongest possible terms, so frankly it's not worth the bother. It's not like Sherloc—it's not like someone can stop snoring by an act of will, anyway. (Can they?)
* Sherlock has kissed a female twice in his life and no, neither time was it Mrs. Hudson. The first was when he was a very tall nine and the girl was twelve and should have known better. The second time he was sixteen and the girl was twenty two and should have known better. Both times there was tongue involved and it sure wasn't Sherlock's.
* John has kissed four other men before Sherlock, three when he was in the army and one when he was seventeen years old. Alcohol had been the impetus behind all four kisses, and each one had been with men significantly taller than himself. John now thinks those previous pecks with lanky men were a warm up for what was to come.
* Sherlock has never let his hair grow longer than it is now, a fact John finds appalling. As a matter of fact he's asked Sherlock if he would grow that glorious mop out, just once, but so far the detective resists. When John tells him he once had "more hair than an entire 80s rock group," Sherlock does not resist secretly emailing Harry, requesting photographic proof. When John's sister finally replies a month later, it is with a bad scan of one John H. Watson, pseudo rock star, teased blond hair, tight pants, and all. Sherlock immediately makes it the wallpaper on his laptop.
* Someone once asked John if he wished Sherlock was shorter. John's reply had been to ask that person if they wished their dog was blind. At the time he wasn't sure why he got so angry so quickly, but he knows now. Everyone—including him—tells Sherlock to change. Be nicer. Be quieter. Be more humble. Well screw that. Sherlock is perfectly fine as he is and if someone wants him to change they can talk to the ex-soldier about it, understand?
* Sherlock has possibly the loudest, most lavish sneezes John's ever heard. Once, when they were still a hundred yards from 221B, the detective sneezed twice, his entire body quite nearly flinging itself apart. When they got home they found that Mrs. Hudson had left a pot of honey-and-lemon tea and a box of tissues by their flat door.
* John often falls asleep in cabs, especially at night, mainly after they've been chasing criminals down alleys and over rooftops. Sometimes, when he's gone deeply and peacefully into dreams, night shadows and neon playing over his face, Sherlock will tell the cabbie to just keep driving awhile, and damn the expense.
* Yes, Sherlock often performs ridiculous experiments using absurd ingredients, but despite what everyone says, he rarely blows things up, and when he does it's almost always on purpose. As a matter of fact he can count on one (slightly injured) hand the number of times there has been an unintentional fire in 221B. (If forced to include unplanned clouds of smoke or sparks of any kind, however, that number quadruples.)
* John's belly button is an "outtie." When he was child of four and a half he wanted the much more popular "innie" and spent a good deal of time trying to poke his little fleshy nub back inside. He was so aggressive with his campaign that he ended up giving himself two belly button infections that year. When he told this to Sherlock in the kitchen one morning (how they got on the subject he'll never know), the detective got on his knees immediately and started peering at John's belly button, trying to think of an experiment to do on it. After awhile Sherlock gave up and, lifting their shirts, he aligned their stomachs until John's outtie was, um, sort of inside his innie.
* Sherlock has fifteen noticeable scars on his body. One came courtesy of an angry suspect and a two-by-four, another from an exploding beaker, a third from a fall off a fire escape. Most of the rest are small, pale ones on his biceps and thighs that he doesn't let anyone see (John has seen them). He put those scars there himself, long ago. He doesn't need to do that any more.
* John has five noticeable scars on his body. One is the result of a beer bottle exploding in his hand (a very short, embarrassing story), another came from Harry being bossy Harry and pushing him down when they were kids. The other three—one on his leg, one under his chin, and the other in his shoulder—are a legacy of the war. He tries not to look at them, but he does look at Sherlock when Sherlock looks at them, and that's healing enough.
To be continued. We're now up to 26 of 312. Why 312? I have no idea.