What's Your Birthday?

I learned a long time ago that "First Name" somehow sounds a lot like "Birth Day" to people standing  at a pharmacy counter. As a result I modified my approach to asking for a patient's "Date of Birth". It doesn't mean we still don't receive the wrong answer from time to time. but this image always comes to mind when it does.

No, no, no, no, no, no
No shorty what's your birthday?
I said I need to know what is your birthday?
I needa have all your info what's your birthday?