Not Dull, for the comment-fic challenge: Free For All

[meatball42]

Title: Not Dull
Fandoms: Sherlock, Supernatural
Rating: G
Characters/pairings: Sherlock, John, the Impala
Warnings (including spoilers): None
Wordcount: 146 words
Summary: Written for the prompt ‘Supernatural/Sherlock, what does the world's greatest consulting detective do when confronted with cold hard evidence for the paranormal?’