Meaning of "It's Not A Tumor" by Austrian Death Machine

The lyrics of "It's Not A Tumor" can be interpreted as a humorous take on misunderstandings and frustrations caused by miscommunication. The speaker is exasperated with someone who keeps talking, not letting them speak, and making incorrect assumptions about their father. The repeated assertion that "It's not a tumor" can be seen as a way to emphasize the ridiculousness of the situation, as the other person's comments are causing a headache, not a physical ailment like a tumor. The mention of the speaker's father being not a fireman, wrestler, or basketball coach adds to the absurdity and showcases the absurdity of the questions being asked. Overall, the lyrics play with the theme of communication breakdowns and the annoyance that comes with someone not listening.