One of the names that confused some during yesterday's 2013 Mad Decent Block Party lineup announcement was "Jack U." Who the hell was Jack U? Well, Diplo sent out a tweet that has made DAD VERY interested about this act:

That's right, Skrillex and Diplo are performing as Jack U during this year's Mad Decent Block Party! As of right now, the duo is only listed for the San Diego show, but who knows if they will end up at any other spots. Are you still mad about Mad Decent charging for this year's Block Party?