I don't get this one. What happened to the bunny?
It's a Hitch-hikers Guide to the Galaxy gag.
This is the original cartoon:
Here're some quotes:
Search for "bowl of petunias".
Oh, and as for your question about the bunny..
Many people have speculated that if we knew exactly why the bunny had turned into a bowl of petunias, we should know a lot more about the nature of the universe than we do now.
Funny thing is, I own and have actually read that book! (Or so I thought... but now I'm wondering if I didn't get all the way through it or if I've just forgotten parts.)
Anyway, now that you've explained it, I think it's *hilarious*. ;)
By the way, you are taking programmer fashion to new heights over on my site. Huzzah! :)
It's kind of a ripped picture of the original chocolate Easter bunny joke, but it's still funny. :-)