In case you're wondering what that loud bang, followed by the feeling of wind on the back of your head and warm goop running down your neck was, that was your mind being blown, because Tina Fey made her rap debut on a new Childish Gambino track. In case you're wondering how the hell that happened: Childish Gambino, also known as Donald Glover, was actually a writer on 30 Rock, and even picked up a few Writer's Guild ...