The speaker of "Sick" is a girl hiding in her bed at noon, eyes shut and door closed, wishing the world would simply stop moving. She hopes the moon will rise later and summer will never end, because as long as time stands still, she doesn't have to leave her room. But in the second stanza her hope gives way to dread. The moon will rise, summer will turn to fall, and everything will keep "twisting, turning like a broken record."
The last stanza reveals that "you" are the cause. She feels motion-sick because of this person, and she lies still so they won't look into her eyes and see her "traumatized world." The language of war, with "won," "score" and "settled," suggests she believes that seeing her pain would give this person victory. The mood is heavy, anxious and exhausted. It captures the feeling of being overwhelmed, where hiding seems like the only defense left.