So, U.S. Senator Mark Warner (D-Virginia), Katy Perry and Mark Zuckerberg all walk into a bar...
Wait, what the fishpurse?!
Original from Facebook itself.
(Side note: This photo is from a whole gallery put out by Facebook when Katy Perry stopped by their offices in California - still does not explain Warner ... from looking at all the photos I have come to the conclusion that Facebook nerd are super short... only one other person - aside from Warner - was taller than Perry and it was a chef in the cafeteria...).
Here is the full story from Mediate