What is number one?

The instructors in Wonder Boy's Tae Kwon Do class have been trying to teach the kids how to count in Korean. It is such a wonderful introduction to the culture and language of the martial arts they are all training in. The kids have been excited about it, practicing it, and training with the Korean numbers 1 though 10 for several weeks now. This week, when practicing front kicks, the instructor asked what number one was in Korean. There was silence in the room. Eyes darted from the ceiling to the floor, trying to avoid being called on. You could literally hear the wheels spinning of everyone all trying to rack their brains for the answer. All of the sudden Wonder Boy piped up in the most innocent, wide eyed, sweet sounding voice and said "uno?"