Hi AngelGarcia Welcome to the forum. I see the cowboy stance often in NZ, mostly amongst men, but my daughter and I often sit in the cowboy pose I'm from New Zealand and we have many different cultures living in Auckland. One thing that would be unique to NZ is the native Maori people's traditional Haka or war dance. This used to be performed before battle, and you can see it as part of the Rugby tradition when the Haka is being done before a game is played.
Traditionally, the men would would have tattooed faces and as a display of fierceness, strength, and power they'd stick their tongues out and widen their eyes so you can clearly see the white of the eyes. Maori woman sticks her tongue out, it is a sign of great defiance.
Here is a quote from a NZ website: "Pūkana
Pūkana or facial expressions are an important facet of Māori performance. They help emphasise a point in a song or haka, and demonstrate the performer’s ferocity or passion. For women, pūkana involves opening the eyes wide and jutting out their tattood chin. For men, it means widening the eyes and stretching out their tongue or bearing their teeth. Though these expressions may be intimidating, they are not necessarily a sign of aggression, but may simply show strong and deep-felt emotions." Source: http://www.newzealand.com/int/feature/kapa-haka-maori-performance/