I'm sippin wishing well water imported from Pluto
That's why my eyes is glassy, so ain't got to ask me

from Reflection Eternal (Ft. Mr. Khaliyl & Yasiin Bey) – Fortified Live Lyrics on Rap Genius

Meaning

This became quite a famous line, probably precisely because it makes no fucking sense, but sounds cool.

Best guess: it’s a sarcastic way of telling off someone asking why you seem “high.”

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