It would be annoying if the street was really busy and theres this peabrain standing there who's got nothing better to do than try and annoy people by standing in their way. I don't know what the actual circumstances were but it may have been he was acting like a jerk. He was probably some obese 600 pound guy as well. I hate how fat people often try to take up as much space as possible - like they like being fat and want to be fatter. If they're blocking an aisle and there's room for people to walk around them they will try and block the space somehow so you have to go back the way you came and try a different aisle or actually ask them to move