First Impressions Are a Work in Progress

Sherlock's brilliant, always has been, he's a genius, and finds out at least fifteen facts about somebody just by looking at them, but he still can't read them. At thirty-nine, people still confuse him, and the rules are too complicated but John is still trying to teach Sherlock the rules, and Sherlock still isn't getting them.

Aspergic!Sherlock, some violence, rated T for safety.