Heart racing 'til blunt is lit like, "He don't give a fuck again, right?"
Earl constantly brags that he doesn’t give a fuck, but the fact that he says “right?” at the end, and his heart is racing, indicates he has some anxiety (likely about his future, as an up-and-coming rapper facing intense public scrutiny and high expectations from hip-hop audiences). This again ties into weed smoking, as he might be self-medicating for the aforementioned anxiety.
Earl has issues to deal with which is the reason for getting faded in public. He went to Samoa to clear up some of those issues, but his hearts racing and now he doesn’t give a fuck again so he’s lighting up more to relieve stress.
Then again, there’s another “right” a few lines earlier in the song, where Earl is expressing insecurity and an unwillingness to deal with the pressure and stress and living up to his father, who, like Earl, is a poet. But this “right” is less of an expression of insecurity and more of a brag: he’s “abrasive” and he’s going to deal with his shit.
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