Video: Judd Apatow Talks About How Paul McCartney Wouldn't Share His Number With Him

As regular people, most of us know there's a line you don't cross when you approach a celebrity, but what about when you are a celebrity around a bigger celebrity? Is there really a protocol for that? I guess the simple answer is you just act like a normal human being, but being star struck can cause you to do some silly things. Judd Apatow learned that the hard way when he thought he was cool enough with Paul McCartney to ask for his number, and was sadly mistaken. Hear the hilarious story below.