Lucy Guo is neighbors with David Beckham, but don’t ask her what he looks like. “Every white guy looks the same to me, so I have been in the elevator with David Beckham a few times and I didn’t know it was him,” the tech developer, designer and investor told The Post. “The only reason I found out after was because my friends were in the elevator with me saying, ‘Oh my God, that was David Beckham.’”