I'll be honest; I don't QUITE understand the meme, but Bart is right: there is absolutely an order and a system to the urinal. The maxim is "maximum space between the penises." First up starts on an end. Let's say the left. Second in has no choice: far right. Third in, likewise, has no choice: middle. Fourth in, you'd THINK had a choice, but no... it's the open middle one on the left, because the far left will presumably be leaving first. Then the middle on the right. It's more complicated at events, like in between bands at a concert, or at halftime of a ballgame, but there's nothing worse than a line of open urinals and some schmoe comes in and parks right next to you for no reason.
(Not really related to anything, but when I saw Marillion for the first time in '92 at Toad's Place, I went downstairs to pee. I got stuck in the middle urinal - worst place to be - and while I was peeing Mark Kelly came up and used the urinal on one side, and Ian Mosley the one on the other. I honored ettiquette and did not say a word to either of them.
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