Pokerface = Not As Psychosexual As You Might Think...
"I'll get him hot / Show him what I got." [TRANSLATION: GaGa will turn up the heating and show the bloke in the room with her that she has a brand new XBox.]
"Bluffin' with my muffin." [TRANSLATION: She says she has a blueberry muffin, but actually has a chocolate chip muffin! Oh, how torrid!]
"Can't read my / Can't read my / No, he can't read my pokerface." [TRANSLATION: She's playing poker with someone who hasn't worked on the TV show "Lie To Me."]
"P-P-P-Pokerface, P-P-Pokerface." [TRANSLATION: She's saying we should poke her face! So, to paraphrase the words of the greatly superior Ian Dury: *"Hit her with your rthym stick!"* ]