One day I was walking down the street, and coming towards me was an older lady with what appeared to be a giant nose. Not like, "Gee, her nose is kind of big." big, but, "WOW! There's an alien attacking her face!" big.
As she got closer to me, I realized that her nose was notably less giant than I had originally assumed. By the time she was directly in front of me I'd come to the conclusion that her nose was a perfectly normal size, but the rest of her was entirely too small.