It's an amber alert I gotta missing roof I
It was black and it was travelling fast

from 2 Chainz – Stop Me Now Lyrics on Rap Genius

Meaning

He dropped the top so therefore it’s “missing.” but since it’s missing he is saying there’s an Amber Alert (A child abduction alert) for it even though its black and travelling fast (It is said that people work faster to find white kids who have been abducted versus minorities).

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