O'Neal's flow is straight fire over a classic Jay-Z beat -- and he mocks LaVar's basketball career right off the bat.
"I been doing this a long time ... when you were averaging 2 points riding the pine."
There's more ... Shaq also responds to LaVar's claim that he could beat him in 1-on-1.
"You having a dream and when you wake up apologize. And bow down to my Staples Center statue hanging off the side (of the building)."
But there's a twist ... with Shaq giving LaVar props for his parenting skills at the end of the track -- plus, he praises LaMelo's jump shot.
Enjoy ... and let's pray LaVar responds.