The speaker describes being very good at copying other people. They can walk like Lucas, laugh like him, talk and act like Ellouse. They can even fake being cool, popular, different or happy. Each time, the refrain "I'm an observer" comes back, as if watching others closely is the speaker's main skill, and perhaps their way of hiding.
Then the poem turns. After "I can pretend to be someone I'm not," the speaker admits a blunt truth: "I'm fake." The short lines that follow feel like a release. Instead of "pretend," the speaker says "I can be me," then accepts being "weird" and even "a freak," and ends on "I am real."
The mood starts out flat and repetitive, almost tired, then becomes quietly defiant. Words that sound like insults are taken back and treated as signs of honesty. The speaker seems to feel that being real matters more than fitting in.