. You can't wait for season four

. You formed a club that makes theories on what will happen in season four

. You think that John Hamish or Sherlock would be great baby names

. You rewatch the episodes all the while playing you're Sherlock because you know what happens before the characters do

. When you're doing something and don't want to answer why you say " It's for a case." or " It sort of just happened. "

. You have a pink case for your phone( or better yet, everything you own is pink)