was watching this movie based in medieval times. a stranger knocks. the sentry at the gate asks -

"Halt! Who goes there? Friend or Foe?"

i really cannot believe such a question has been asked by a sentry, anywhere in the world! i mean, what is the enemy going to say?

"Oh! It is alright. You can go ahead and shoot me. I'm just a foe."

heh.

well, people don't just say the silliest things, they guard against the most unlikely and irrelevant threats. they live in fear of imaginary problems while walking blindly towards genuine dangers.