For us, any sign on the highway that says "MURDER BURGER" is tantamount to a Moral Imperative. Which is to say, it doesn't take much to convince us to meander.
Meanwhile, it takes only a misguided Gedankenblitz to convince W that he has divined a Hidden Meaning in the name of the joint, viz.:
murder burger -->
death burger -->
death castle -->
= White Castle
And here I just figured they were poking fun at the Morrissey "Meat is Murder" crowd. ("Perhaps we get Nina Totenberg to investigate?" offers W.)
Click here for photo of cool MURDER BURGER shirt (cost me only nine bucks, too!).