This is obviously a reference to the recent jewel theft at the Louvre, but in fact the Mona Lisa was the subject of a famous theft. From Wikipedia:

“The painting’s global fame and popularity partly stem from its 1911 theft by Vincenzo Peruggia, who attributed his actions to Italian patriotism—a belief it should belong to Italy. The theft and subsequent recovery in 1914 generated unprecedented publicity for an art theft, and led to the publication of many cultural depictions such as the 1915 opera Mona Lisa, two early 1930s films (The Theft of the Mona Lisa and Arsène Lupin), and the song “Mona Lisa” recorded by Nat King Cole—one of the most successful songs of the 1950s.”

I was lucky enough to visit the Louvre about 10 years ago with a friend from high school who was a professor of art at a midwestern university. On the way in, I asked him if we should get the audio tour. His response was something along the lines of “We don’t need no stinkin’ audio tour”. As we proceeded through the galleries I got educated painting by painting by my friend. There are, of course, many, many masterpieces in the Louvre. The only gallery that was really crowded – overcrowded, really – on that rainy January day was the gallery housing the Mona Lisa. We ducked in and out just to say we’d seen it.

Boise Ed sends this in: “I get how breaking up can make one feel insignificant, but why are they still sitting together five minutes later, and why is she still making small talk?”