Haha, yeah I did it once back when I was in high school. We had an open campus and would leave for lunch. Me and some friends ran across the street to smoke a bowl and then walked down the street to the grocery store. I was walking along, talking to the guy on my left, and the next thing I knew I was on the ground, surrounded by a bunch of people laughing, at me and my ears were ringing. I had walked right into a street sign. LOL