"A worst class"

"A worst class"
When I heard this his word, I smiled a little bit, because I thought it was just a joke.
However, when I looked around and saw my classmate's faces, I was confused, because their faces were so serious!!
While we discuss about how can we describe Rab in three words, all my friends looked like small children who were scold by their mothers for something and I also came to think it as serious thing.

After all, it turned out that it was just a joke as I guessed first.
We really worried about our essay, but by this experience I could understand how human's emotion effects to our idea about things.
His way to teach was really nice.

What I was surprised in this class was that in some country( I forgot which country),
crossing our legs when we are standing means I want to go to a rest room!!!
I was really surprised, because actually I often do that and I did so many times it in America!!
Oh my God! How many people who are from the country did think why I don't go to rest room!!?
I was so embarrassed.
I hope nobody were there who thinks crossing legs means people want to go to rest room!