Lyric discussion by litteracy 

Cover art for Hero lyrics by Childish Gambino

The lyrics in the first couple verses with question marks are correct:

"Yes a nigga flow went from Camry to Phantom" He's meaning that his flow has been greatly improved. The Camry is a family sedan and the Phantom is a crazy-expensive sports car.

"Sleepin' on a jet like Lear (lier) like chandel" A Lear is a brand of jet and he means "Lear" as in Lear Jet or as in chandelier.

"Yeah I'm killin' paper, call it poppin' tag" He's referring to the more popular phrase "poppin' bottles", but since he's talking about spending a lot of money shopping he's calling it "poppin' tag" (because clothes have tags.

"Barf on the track, the amazing and rap-furious (?)" Here he's just saying that he's a mad-good rapper "rap-furious". "Barfing on the track" is referring to the fact that he's "sick", a few rappers have used this same analogy.

Song Meaning