"Are you biologically male or female?"
Not sure. Never been tested.
"No, but were you born a man or a woman?"
I was born a baby.
"What sex were you then?"
Not sure. I was too young to understand the distinction.
"What does it say on your birth certificate?"
I'm pretty sure it lists my name and date of birth. Other than that, I can't really remember.
"So are you biologically a man or a woman?"
How can one tell?
"..."
If you're asking me to give you a private striptease, I should warn you: I don't work for free.