They thought I was Jamaican, I got three jobs

from Childish Gambino – Think of Me Lyrics on Rap Genius

Meaning

Within the song, he makes “three” sound like “tree”, which reflects the accent that a Jamaican has, and references the stereotype of Jamaicans having multiple jobs. He does, in fact have three jobs; he’s an actor, comedian, and rapper.
“tree” could also refer to the almighty Ganja.

http://www.youtube.com/watch?v=Jpu5_3qk4KM Jamaicans working hard

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