[curiosityshop]

Well, yes, you made a fool out of yourself, but chances are, your teachers simply had no idea what you meant to say and either didn't pay attention to it, thinking that they had misheard it, or simply realised that you had no idea what you were saying. Next time, don't shout things out in japanese unless you actually know what you're saying. If you really feel bad about it, maybe talk to your teachers at your next training lesson, and say something like 'oh I really made a fool out of myself the other day, I shouted 'tora' thinking it meant 'attack'!' and you'll see by their reaction whether they actually knew anything about it or not.