What a petite Indian girl with a neat pussy and what a big dick on a cowboy! That's the combination for maximum effect and penetration. As for the role-playing, who knows, maybe at first it was like that. After all, white conquistadors were something new to Native American girls, and there's no way they weren't drawn to try white dick for a taste. The couple are good, and nature allows them to play this kind of role play. We can't really run around like that, or we have to go very far away, and you can't find such beauty there.
When a female puts her breasts on public display - it is difficult to refuse the temptation to try it. And then the rest of the charms are just a stone's throw away. And she doesn't mind her body being taken advantage of.