There should be a couple of que's...
Line up in the appropriate lane if you....
Lane 1) "Believe in Imaginary Friends"
Lane 2) "Think that you should be checked, cause you think you might be a terrorist, but not sure"
Lane 3) "If you believe in security, because you think it achieves something" (special one for security staff and police people)
Lane 4) "if you are a grannie"
Lane 5) "If you are none of the above - straight through.