I don't think is about being a celebrity. In that case would be the way how a celebrity can feel and how we common people feel about our lives, the songs uses a lot of metaphors and analogies just to say how you feel about being young and living your life so fast because the world is a mess, and everything is so the same. And that there is nothing we could do. Ok its a little bit pesimistic, at least it's real, but it also represents the way of living of our generation. I would express myself like that being a young person., I love the part that says "This is our decision, to live fast and die young" maybe this is our decission when we have some excesses, we get drunk, we get stupid and do stuff we feel able to do because we think they are ok, or at least not wrong. Se then yes, we do pretend, to be alright, to feel alright, we pretend nothing happens. When sometimes everything is falling down around us. When I heard this song the first time. I thought it was an anthem for the ones who wants to scape, to stop thinking to much and just feel, express, sing and dance. And let everything go! Let go.