Tupac had "Dear Mama." Kanye had "Hey Mama."
Lonzo Ball has "LaVar."
The Lakers rookie (and part-time rapper) just dropped his new mixtape, "Born 2 Ball" -- and it ends with a brand new heartfelt song called, "LaVar" ... a lyrical tribute to his father.
During the 3 minutes and 15 second track, Lonzo calls out the haters and professes his love for his dad.
Lonzo says his dad is one of the hardest working people he knows who's always had his back since day 1.