Edit for, this just happened.
I was in mixed clothing - male top, female jeans, heavy green male-sweater. Not trying to pass.
So, I walk up to the pharmacy counter, say I'm here to pick up a prescription. She asks me what my name is, I say M--, Christopher.
She asks me, literal wording, if his birthday is in April.
Oh, and earlier, I got a fraud prevention call. They have my zip wrong, so I'm transferred to an operator - who, even after hearing my SSN and birthdate, refuses to count it as authentication - asking if I can visit a physical branch. My best guess is that she did not believe I am Chris.
It's a good day, folks.