He is making fun of him disregarding the effort to change his old stage name

“See, your name was Meek Millz, and now it’s Meek Mill,
You couldn’t even keep the f***in Z in your name”

• Cassidy, “R.A.I.D.”

Theres more of them.. stay woke

I do the same thing and never knew he originally started of as "Millz" and idk why it just rolls off very naturally