Re: funny moments
At our dojo, the sensei says 'yame' to stop/pauze an excercise so everyone goes back sitting in seiza, so he can show another excercise.
In our club, there is an older student with the same low voice like the teacher.
And when that person thinks he's already doing too long that same excercise, or he gets bored, he says "yame" out loudly himself.
Then, every student is going back to sit in seiza, and the real sensei is looking like: 'did I say anything?'.
Always fun to do ;-)