This is a young adult novel written kinda about 50 Cent's life. Here's a link to something I wrote about it. Here's a description:
Thirteen-year-old Butterball takes readers on a journey through the moments that made him into the playground bully he is today. Loosely inspired by 50 Cent's own adolescence and written with his teenage son in mind, Playground received wide critical praise--and is now poised to become a perennial classic.