When a guy takes a piss with his foot propped up on something (Usually the side of the bath tub) like Captain Morgan stands with his foot on a barrel.
I like your bathroom, I can pee Captain Morgan stance in it.
They way someone stands when they're probably gay. Typically a lean to the left or right, with arms akimbo.
"Yeah, that guy totally has gay stance. Looks like he's about to fall over"