While playing
one's cards close to
one's chest often refers to secretive behavior, it is nowadays being used as a euphemism for
breast binding.
A lesbian or trans man may be referred to as someone who plays their cards close to their chest, especially when one is not sure what pronouns to use.
Oh, that's not a man, that's
Hannah. She's got great tits but she's a butch and prefers to play her cards close to her chest.
That's Taylor, he can't play tag with us because he's playing his cards close to his chest and we
don't want his lungs collapsing.
I saw Alex at the gym yesterday! It was
pretty shocking because she usually plays her cards close to her chest but I guess she just uses a sports bra for working out.
Playing one's cards close to one's chest should be done safely and intermittently.