Following up on the meteor line, a massive meteor is what contributed to the mass extinction of dinosaurs. For other rappers, the end is near. If the meteor is a metaphor for Lupe, then dinosaurs could mean old rappers, e.g. Kanye West whose style Lupe mocks in the following lines and the other rappers he mocks during the song.
That would mean that he takes their places in the rap game because now it’s his time, similair to what Kendrick said.
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