Illegal Move

I was using the restroom at school today. I went to the far right urinal out of the 3 (all of which are the same height). Some guy comes and and goes in the middle one right next to me. Not a cool move at all. Man law #6 states "Every man shall allow one empty urinal of separation in a bathroom with three or more urinals; law is void if there are dividers in between each urinal." And there were no dividers... come on seriously...