Sweeping up my competition, call me Mr. Broom
Knocking niggas over, call me bulldozer

Meaning

He talks about “sweeping up competition”. If you sweep up competition, you’re defeating your opponents: Mr. Broom.

Bulldozers knock things over (and sometimes people..)

To help improve the meaning of these lyrics, visit "Holla At Me" by Chris Brown (Ft. Tyga) Lyrics and leave a comment on the lyrics box