The document expresses frustration with having to constantly explain or clarify one's thoughts and statements to others. It describes how annoying and insulting it can feel when people imply that what you said was unclear or confused just by asking "What do you mean?". The person does not want to have to articulate or expand on what they just said, implying that the meaning should be clear from their initial statement alone and that others need to interpret it themselves without demanding further explanation.