Date of Expiry?

I travelled from Bangalore to SF over the weekend and a very funny incident happened at the airport. The Singapore Airlines folks were distributing a form to everyone who was going to the USA. It was mandatory to fill out that form with an ominous "Homeland Security" cited as the reason.

The form had fields in the following order:

1. Name of the traveller
2. Passport number
3. Date of birth
4. Date of expiry

I was zapped looking at questions numbered 3 and 4. I pointed to a Singapore Airlines official that I do not know my date of expiry :-) She asked me to fill the details of the passport there. Then I pointed out that my passport was issued and not born and it did not have a date of birth :-D. The person just looked at me, could not even smile and walked away.