Sherlock Discovers "Three Continents Watson"
When Sherlock learns what John "Three Continents" Watson's army nickname is for, he realizes he's got the perfect opportunity for a first-hand experiment in physical passion from the one person he can actually stand to be touched by. John thinks there might be a bit more to it than that.
(Part of my "John and Sherlock's Kinky First Times" series of shorts, all revolving around the same basic theme of "John and Sherlock get sexy for the first time and also discover some kinky stuff about each other.")