Title: Night at the Museum
Words: a 221B has 221 words and ends with a b-word
Pairings : Sherlock/John
Disclaimer: Not mine.
Summary: ‘365 days of 221Bs’ challenge: a prompt a day, given by atlinmerrick. Day 323.
( Day 323 - It was the third time it had happened and John was starting to wonder if Sherlock was going for some kind of record. )