Random Loiterer: "I'm looking for a gift for my wife. She's into Serious Literature."
Me: "Any books in particular?"
Me: "Does she have a sense of humor? Kate Beaton has ser--"
RL: "Nothing like that. Serious Literature."
I go through the store picking up different types of books I believe might appeal: The Graphic Canon, Daytripper, Maus, Persepolis, Unwritten, Monstress, Arrival, several biographical comics, some Chris Ware books, Joe Sacco's work. Nothing strikes his fancy.
RL: "Thanks for your recommendations but none of this seems like what she reads."
Me: "Well, what does she read, specifically. Maybe I can find something similar--"
RL: "Do you know Fifty Shades Of Gray?"
So, if you see the corpse of a man who's been thrown from a very tall building, know that while it may Look Like the guy who defines Fifty Shades Of Gray as Serious Literature, that's just an amazing coincidence. Clearly, I let him walk peaceably out of our store without buying anything, and didn't murder him in the slightest.