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"Kiss the sky" in my interpretation, refers to the act of Exhaling marijuana in a skyward direction.

It was first made famous in the Jimi hendrix song "Purple Haze", which is about marijuana

"Purple Haze is a popular brand of cannabis." - wikipedia

Also appears In the Method Man song "How High" he sings, "Scuse me as I kiss the sky".
by Castro__ March 05, 2008