A face on a person that shows no emotion, often called poker face because in the game of poker it would be foolish to show any emotional traits that might screw the game for you.

an expressionless face(becuase people keep thier faces expressionless during a game of poker)

how to wake up lady gaga
it means: poke her face

staright faced. since you have to keep a still face while playing cards.

I'm sorry.
I'm having a hard time reading her Poker Face.

a facial expression that was once used whilst playing poker, now it is a term used to present a face bedazzled with sequins and glitter.

A 'poker face' is when a guy shoots a load on a girl's face while the girl's expression doesn't change, despite the fact that she loves getting a facial. She keeps her 'poker face' because she knows that if she lets on that she enjoys it, her boyfriend will continually request to give her facials until the end of time.