The first thing you should do when you laugh

The first thing you should do when you laugh at is: laugh at people who laugh at you, but inside, do not let the person know, if that person knows, you certainly can not stop laughing. ie: they think you are the dumbest, ugliest,  strangest, and exactly to ridiculed, but they have NOT KNOW what you are, what your behavior, like what your habit, and like what is in you, but they have given the assumption that you are very laughable, how stupid they are, decide something without knowing these things, they do not EVEN know how stupid they are! HHAAAAA HHAAA!