On the flip side of this topic, I was standing at one end of a fully-occupied trough urinal at a state fair a couple of years ago, conquering my pee-shyness, when another guy about my age edges in at the end with a "Can I get in here?" I could barely utter something like "uh, sure" and try to shuffle over before he said, "Don't worry, I won't look. I can barely see what I've got."
Speaking of which, does anyone else agree that it's just about impossible to step to the side (or even lifting one foot up) when standing at the urinal (or outdoors) without stopping the flow?