Urinal Checkmate 

The act of a man picking an open urinal that accomplishes 2 things.

1. He is not standing right next to another man
2. Anybody else that enters the bathroom will be forced to stand next to another man.

I was late because Frank urinal checkmate'd me, so I had to wait to go to the bathroom.

Urinal Checkmate by urinalcheckmatelolo April 25, 2011

Urinal Checkmate 

Where you try to use the urinals in a public toilet but cannot do so because there are not spaces where you wont directly next to another person, despite there being several free urinals.

sounds like a case of Urinal Checkmate

Urinal Checkmate by NOOTNOOT June 30, 2011