"Yes, I've stepped in glass and dog dirt. You learn to scan your surroundings to avoid accidents, but they happen. Your soles are tough, though. The glass was painful, but it didn't do any real damage. With dog mess, I just wipe my feet on grass and then wash them at a tap."
–A couple things here. First, "dog dirt," haha. Second, this broken-glass-and-dog-poop-strewn hellscape is Britain, obviously.