Ascendent Atlanta rap goofball 2 Chainz teamed up with Kanye West on "Birthday Song," a track from his messy but stronger-than-you've-heard new album Based On A T.R.U. Story. And the brand-new video is quite possibly the weirdest thing you will see today. It's a creepy, mechanized, Lynchian vision of a birthday party -- or, at least, it would be if ...