One advantage to being a male, we can whip it out and relieve ourselves whenever we would like to. That doesn't mean it's appropriate wherever we would like to. Some times its a bad idea. In this case, if you are stumbling around an airport waiting for a flight and appearing to be intoxicated, it's a terrible idea.
This isn't a quick piss either. This is one of those deep sighs-of-relief-type wizz