The speaker describes a boy who feels turned around, as if the world is flipped and he's the only one who notices. He's worn out by "all the noise," which could mean actual sound, or the pressure and chatter of other people's expectations. The line "he can't control his life" is the plainest admission in the poem, and it sets the tone: he isn't choosing to be different, he feels pushed into it.
Then he drifts "off in another solar system," a striking image of distance and loneliness. He's not just absent from the room; he's far beyond it. "Spiraling" adds a sense of losing balance, while "all out of tune" suggests he doesn't fit with the people around him. Yet the last line, "he just goes the other way," has a quiet stubbornness. The mood is weary and isolated, but there's a hint of defiance too. Being upside down may hurt, but he keeps moving on his own path anyway.