It actually happened to me - well, not to drop my britches, but to get run
through the checkpoint in order to get back out to my own airplane! Some
airport authority (not going to say where) decided the only way out to the
tarmac was through the security check. Running my flight bag through the X-Ray,
what do you know they found a bunch of items not normally allowed on planes.(I
don't carry a gun, but I carry more than nail clippers and a toothbrush). So we
sort of looked at one another, and they decided I was not going to cut my own
throat to get control of the plane and fly it to Lebanon, so they reluctantly
let me through.

No big deal - but what I wonder is, since this must happen 20 times a day at
that airport, will they ever get to the point where they decide there's just no
point, and let us through? Probably not . . .