Washroom etiquette....

So the washrooms at work only have two urinals and they are side-by-side. Yesterday I walked into a empty washroom and stepped up to the urinal. 2 seconds later my boss comes in and uses the urinal beside me. I think my boss and Cuch have been talking... because my boss then started a conversation with me. That was a horrible minute.... very uncomfortable. Later that day I went to a different washroom on the floor in an attempt not to have the same occurance. Instead after 2 seconds at the urinal a black dude came in and used the urinal beside me. He also tried to spark up a conversation with me and the guy doesn't even know my name! So uncomfortable!!! James needs to come by the office and post his washroom etiquette rules (excerpt from email):
if you ask any man he'lll give you the same answer. go to a stall and
unleash the fury, pick the one furthest away, not the middle one, the
one
furthest away in case a 3rd man comes. that way you have the buffer
stall.
also, the guy using the urinal should out of respect be using the one
furthest from the stalls.

I have a more difficult one: 5 urinals:

1) occupied 2) vacant 3) vacant 4) occupied 5) occupied

which vacant one do you take #2 or #3? The answer is without argument
once
you know the reasoning.