The yoyo is the poem's central image, and it works as a picture of how we keep returning to ourselves. The short lines and repeated "again and again" mimic the toy's motion: out, back, out, back. The speaker says we know this feeling as kids and remember it as adults, so the yoyo becomes a link between childhood and later life.
The tone shifts in the middle. The speaker mentions people who took yoyos seriously and competed in shopping malls, and the words "nature less, neutered" and "sold-out" sound quietly critical. Something simple seems to have been packaged, amplified and sold by marketers.
The ending turns inward. Memories can define you, the speaker says, but then cuts the thought short: "don't need to go back there." The mood is wistful and a little wry, with a hint of wanting to break free of the loop. The poem leaves us caught between nostalgia and the urge to let go.