I would've said it was full when I arrived, but I got thirsty. Let 'em prove I didn't drink from the old thing. At least, that's what I would've said if I could have avoided saying the thing that would've landed me in jail. Which... yeah, jail.
Later I thought that that is what I should have said. But the possibility didn't ever came to my mind then - again, I wouldn't have drank from this thing in a life or death situation. I'm quite convinced that that alone could have killed me.
And I was fairly amused, while being in the IDF, that it's the only place with a fashion police that could send you do jail for a hell lot of reasons.
I tell you, sometimes I have no idea how this institution works. The Mastenichastabo (I bet there's a typo there. I'm referring to the order of linage and jobs in the 15th and 16th century Russia) had clearer logic.