It is bad to do thngs that would upset others.
Jim's friend, Jack, has become fat due to the side effect of the medicine he has been taking.
Jim wants to respond to Jack's appearance.
Jim encourages Jack to talk to his doctor about the adverse side effect on his weight.
Jim laughs at Jack for getting fat and clumsy.
Jack thanks Jim for his advice and feels supported.
Jack feels hurt and refuses to talk to Jim.