I was walking three abreast on a room-for-four-abreast sidewalk, and was deep in a conversation with a coworker. I saw a woman coming directly at me, made eye contact, and she seemed to glare boldly ahead, but it's the city and I don't expect people to be friendly. There was room to my left, but I turned sideways as she passed so she would have more room, seeing as she didn't alter route at all. As she passed, she said, "What? You can't share?" I understand her position, and I certainly could have been more polite, but there was room for her and I felt like she went out of her way to be rude. When I walk alone I try to walk around groups and not through them. I suppose all I can do now is not pass on the grumpiness.