Batman or Superman?

Airport security: What is your Name?


Traveller : Batman


Airport security: Your Real Name; Please?


Traveler : Batman


Airport security : Please don't try to be funny. What is you name?


Traveler : Batman


Airport security : OK. What is your Family Name?


Traveler : Superman


Airport security: So you are really trying to be funny. I would have to take you to detention room for further questioning.


Until they saw the passport.