But here's the brain fuck
We the same, cause I'm probably 'bout to fall out with a young buck

from Royce Da 5'9" (Ft. Eminem) – Writer's Block Lyrics on Rap Genius

Meaning

He’s saying he is similar to 50 Cent because he is going to have a fall out with a “young buck” (a young rapper). 50 Cent had problems with the rapper who goes by the name of Young Buck, who was a former G-Unit rapper.

To help improve the meaning of these lyrics, visit “Writer's Block” by Royce Da 5'9" (Ft. Eminem) Lyrics and leave a comment on the lyrics box