The usual lesson on a fine Friday

Why are bacteria also known as decomposers?

Me: Do you know the answer to this question?
Tutee: I don't know.
Me: Well, because they will decay the dead creatures to get nutrients for themselves.
Tutee: Oh, like your teeth like that lah.
Me: (抓狂) NOOOO!!! Mine is not decayed! I removed it for the sake of braces!


Ok, 原来我很care~