In a recent interview, his estranged father Joe said some really negative things about the Kardashian family and his wife Khloe.
"I wish he had never married Khloe to be honest...she's controlling," he said, adding that Kris Jenner is an "evil b*tch."
Lamar was so upset by his dad's words that he's reportedly completely cut him off.
According to TMZ, the NBA pro called his dad earlier this week and flipped out, saying he'll no longer support him financially.
Lamar had been paying $2,900 a month for Joe's rent, but he's now cutting him in light of his comments.
Joe can't afford the rent himself so he'll have to move out by the end of next month, unless he and Lamar have a reconciliation.
Do you think the fact that Lamar got so upset over nasty comments about Khloe and her family means there's hope for their marriage?