Yep, my life is great, I changed my stars
I re-arrange fate when I rap on bars

from Childish Gambino – I'm On It Lyrics on Rap Genius

Meaning

He went from the kid of parents that take in Foster children to what he is. He references a line in A Knights Tale starring Heath Ledger, (someone he mentions in “I’m Alright”.)

Idea carried into the next line with Double entendre in the last line, rapping both over the beat and at a drinking establishment with everyone watching. All eyes are on him right now.

The second line refers to rapping while intoxicated with Xanax. The street name for xanax is bars. Thus when he is high on bars, he raps better.

To help improve the meaning of these lyrics, visit “I'm On It” by Childish Gambino Lyrics and leave a comment on the lyrics box