Smoke the blueberry sky, blink twice
I'm in the blueberry 5, you blink three times
I may not even be alive

from Jay-Z – Allure Lyrics on Rap Genius

Blueberry is a common strain of weed, sky may be a more specific variety or a clever way of saying weed (since it gets you high). “Blueberry 5” is a blue, 5 series BMW:

The blinks meditate on the brevity of life

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