"Apple doesn't consider oranges. Watermelon is none of my business.

What do you mean, apples don't consider oranges, but watermelons have something to do with me? If the question is related to someone or something, don't consider irrelevant questions. In some cultures, this statement is considered as a way to avoid wasting time and energy. For example, a friend is going through a difficult period, and he should concentrate on helping instead of thinking about other people's problems.