When Sherlock had Redbeard, every Halloween, they'd go out rick-or-treating as pirates (unwillingly chaperoned by Mycroft). After Redbeard died, Sherlock quit trick-or-treating.
A/n: There you go! Thank you for the 5.1K reads! If this book really reaches 6K reads I swear I will fill it up until the 100th chapter! And ofcourse it maybe took me some time to update but! I swear I WILL BE DOING HEADCANONS UNTIL THE 100th CHAPTER!!!! LOVE YO ALL <3