"Oo-rah" or "Hoo-ah"
I don't even know what those even mean actually.
'Yes', 'Righto', 'Will do', anything but 'No', effectively. As far as I know. It is rather odd, and I wonder why the United States Army has cultivated that particular phrase as it has.
On a similar note, I rather like the phrase 'Jawohl', and use it now and then when appropriate. I try not to, however, for it almost never is. What I, of course, mean when I say it is a chirpy 'Yep, I hear you, I'll get to it right away!', but what people hear (due to general lack of knowledge and uncultivated association skills) tends to be '
Alright, geez-Louise, I'll do it, you Nazi slave-driver, gerrof my case!'.
Now, my contribution: Imagine how lovely it is to live in an age and a place where one can (almost) always count on having access to a flush-toilet. With the exception of our own (and very briefly), we do not have to have any kind of contact to loose excrement at all, when all goes well. That is an extra-ordinary luxury, come to think of it. We do not have to see it, smell it or clean it away. It all goes into pipes, and clean, fresh water comes to replace it, in most cases hot or cold at our leisure.
For the vast majority of our history, we have had to live with it, close and personal. Raking it up in buckets to empty on the field, chucking it out of the window, dashing off to a cold and cramped shed outside the house, et cetera. Never before has it been easier to manage the logistics of digestion than today. Further, cholera, typhoid and dysentery are all things that one can live very merrily without, and the humble toilet is a very reliable insurance against them. Heaven knows how many lives they save every day.
Hats off for the modern toilet!