Frustrated Thoughts

Why is it that Nabla ma'am always asks me what she had taught last week? I never seem to know anything about what she teaches and then she looks at me as if I were some alien from Neptune sitting in a class of humans... Yes, I do admit that I yawn every two seconds in her class but I do not fall asleep like the others who she thinks are interested in her class. Staying awake is quite an acheivement on my part. I'm in grave need of acting lessons!