"Zuck! Zuck! Zuck! Zuck!" - something no one's chanted at a rave or any other kind of party.
If anyone looked like they really wanted to hang out with him, we'd think this was fake. However, the awkward "moves," the tell-tale sweat of the computer programmer who has gone outside, and what looks like general awareness/uncomfortableness of dancing next to a billionaire in the crowd say otherwise. Except for that one Asian girl, who seems to have just realized there's a huge pile of money getting rapidly dehydrated to her right. Anyway, he was single then (2009) and had every right to pretend he was just a normal 20-something, so true or not we'll just be happy that Zuck might have had a nice time.