On Monday evenings I teach a beginner English class for Chinese teachers. The students in there are at somewhat varied levels of language ability, but one of my students in particular is definitely a beginner at English. Every time he comes in to class and I say "How are you?" he usually just responds by repeating what I say, rather than answering the question. It happens at other times too; for instance, once, when I found out that he was a chemistry teacher, I got all excited and said (slowly) "My father is a chemistry teacher."
He simply repeated: "My father is a chemistry teacher." :-)
Anyway, the past few weeks we have been learning a lot of food-related vocabulary, and on Monday I was teaching all the flavors--like sour, salty, sweet, bland, etc. Things weren't clicking with the class, especially with my aforementioned friend. My limited Chinese and their limited English were not connecting in this instance, but then all of the sudden, Mr. Chemistry Teacher came running up to the chalkboard, and wrote this:

He finally got it, and so did everyone else. :-)
Thanks, Dad, for making sure I knew this too.