Thank God some people out there still have this instinctive code still with them. My father didn't sit me down to talk to me about this, and I'm sure none of yours did either. Nor did we learn this from movies, books, informational seminars, relatives or friends. Its just something every man is born knowing. Nothing angers and confuses me more when a man chooses to invade my bubble and urinate next to me when there are more open toilets. If I could do more than one thing at a time, I would give him a piece of my mind. Unfortunatly, if I tried that while urinating, it may cause some more than usual splash back, or a flatout miss.
I've come to the conclusion that for those who no longer follow these rules are savages and probably don't use silverware or any sort of eating utensils when eating.