Why do we say 'poker face' and other popular expressions

What's a poker face and why do people make it? poker face expression When someone has a good poker face, they are adept at hiding their thoughts and emotions behind an unreadable facial expression This is poker online w polsce Don't play poker but I hear that it's called a poker face When I look at someone, it's hard to keep a straightneutral expression How do you

poker face episode 3 Beware, poker face: Automatic system spots micro-expressions · From meh to ugh, facial emotion in pic pegged by Microsoft tool · From meh to ugh