Stone cold, rolling stone, I'm a stoned nigga
Write it on my tombstone, I was stoned nigga

from A$AP Rocky – Palace Lyrics on Rap Genius

Meaning

Saying that he is always stoned (high) and when he dies he wants it to be known that he was forever stoned.

It’s also a double entendre — “stoned” as in
A) he was higher than a motherfucker
b) he was killed
Hence, the reason why he’s got the tombstone in the first place.

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