Muffin, I'm Home!

This is the sequel to "Milking It For All It's Worth," the one where Sherlock goes to the supermarket to pick up a bottle of milk, and ends up bringing home his very own John Watson. It is posted at AO3 as "The Sequel to the One Where Sherlock Goes to the Supermarket for a Bottle of Milk and Ends Up Taking Home a John Watson." They allow longer titles over there.