"Sorry! My Prada's at the cleaners along with my hoodie and my fuck-you-flip-flops you pretentious douchebag!"
No, but in all seriousness, I get (and appreciate) what you're saying. Considering my less than conventional educational background, I just wanted to exude my seriousness in the workplace. But as you mention, culture is extremely important at Google, and I trust that they have interviewed enough people to know who "fits" their organization; regardless of one's capacity to do the job.