Why do we have to surrender all the water before entering the airport even if we prove that is in fact a drinking water by taking a sip?

Question

But once inside the airport terminal, we can always buy some water and no one will check anymore if you bring the water inside the plane.

In: 974

Answer 1

I recall being a teen and having an unopened coke at the airport minutes after purchasing it. Security asked me what it was, and then to demonstrate that it was drinkable. Drank a few sips. Guard stared silently at me. Drank a bunch more. Guard kept staring. I drank the rest of the bottle as I stared back.

Dick move security guard. Dick move.