First of all, it isn't HIPPA, it's HIPAA.

Next, HIPAA doesn't apply to everyday conversations.

Finally, you are stupid if you think just because someone asks you something that you are obliged to answer.

Tell them: Would you like to know the size of my penis, also?

When they look there in shock, continue by saying: right, because somethings are meant to be kept private - like my personal medical information.