Maybe. The picture has been making the rounds across the internet (and by rounds, I mean a British tabloid, a local NBC affiliate and a few music sites). But is it real? Probably, though there's been no official confirmation. NBC Bay Area found the deejay in the photo, Los Angeles-based DJ Dory, who wrote on her Facebook wall: "This photo was from 3 years ago... who knew?"

Who knew, indeed. It certainly looks like Zuckerberg. He's not wearing his trademark hoodie or flip-flops or anything, but it's got to be him, right? And while Green Day, Jay-Z and Taylor Swift are his professed favorites, it's not ridiculous to think the then-single Zuck would be raving in 2009. If it is him, it's definitely not the most embarrassing photo he's had hit the web.