FIC: About the Hat (John/Sherlock, explicit)

Title: About the Hat
Author: Emma Grant
Fandom/Pairing: BBC Sherlock, John/Sherlock
Summary: Set during TRF. Sherlock is still trying to figure out the deerstalker, and John decides to show him another use for it.
Rating: Explicit
Length: 2600 words
Warnings: None
Notes: Thank you to drinkingcocoa for the very quick beta. Thanks to dixiebell12 for the *cough* inspiration.
Alternate link: AO3

( About the Hat )