Holmesiana Sighting

I consider myself a Sherlockian, a member of a small, rabid group of devotees of the world's first consulting detective, Sherlock Holmes. Indeed, my humble blog derives its name from a passage in The Engineer's Thumb.

Consider my credentials: I've read The Complete Sherlock Holmes at least 4 times, I've read Baring-Gould's Annotated Sherlock Holmes once, I'm a member of 2 scion societies of the Baker Street Irregulars, I read daily The Hounds of the Internet (a LISTSERV for Sherlockians), I have an extensive Sherlockian library, and I subscribe to two Sherlockian periodicals. So I like to think I know my Sherlockian stuff.

Imagine the mingled strands of glee and bewilderment I experienced on the way to work this morning when I saw this bumper sticker:

From a Sherlockian standpoint it makes no sense. Mycroft, who is Sherlock's elder brother and appears in 4 of the stories, rarely exerted himself and in no story did he risk life and limb to the point he required rescue by Holmes, Watson, or anyone.

What can this mean?

Who's behind it?

I have no explanation!

This is so tantalizing!

I must have an answer!
K-