Webcomic of the Day: Interstellar memes

In the latest xkcd webcomic, artist Randall Munroe illustrates just how far pop culture memes have spread out into outer space over the last century. Munroe points out that the speed-of-light delay would have kept many culturally significant jokes and catchphrases from reaching distant star systems for many years. The cartoon character Bugs Bunny's line "Ehh, what's up, Doc?" from 1940 would now be arriving at the star Gienah 72.7 light years away and Lonely Island's 2008 hit song "I'm on a Boat" would have just traveled 4.242 light years to the red dwarf Proxima Centauri.