Sick Boi is the debut mixtape from writer, comedian, actor, & rapper, Donald Glover (a.k.a Childish Gambino), released June 5, 2008.
Donald wanted to play a character on the mixtape. He was sick while making the project so he used that as the voice of his character, Sick Boi:
In Sick Boi, I was trying to play into something, but turn it on its head, like ‘Oh, I sound like you other rappers, but my voice is high, and it sorta sounds like my nose is clogged.’ It was me messing around with a lot of that.