Charles Oakley: Fat Joe 'Disrespected' Anthony Mason

Charles Oakley says he still has Anthony Mason's back -- and he's going in on Fat Joe for "disrespecting" the NY Knicks legend by naming him as the mystery victim in a Biggie Smalls track.

"You don't talk about a guy after he's deceased," Oakley said ... "definitely disrespectful."

The song in question is Biggie's "I Got a Story to Tell" -- in which the rapper details a night where he was sleeping with the GF of a Knicks player ... and when the player came home, Biggie posed as a burglar and pulled out a gun to rob him to cover up the affair.

Biggie never named the Knicks player in the song -- and it remained a mystery until this week, when Fat Joe went on ESPN and identified the victim as Anthony Mason, who died last year.

For the record, Oakley says he was very tight with Mason -- and AM never brought up the alleged incident once. It's clear, Charles isn't convinced Fat Joe and Diddy are telling the truth.

There's more ... Oakley also makes his NBA prediction -- explaining why LeBron and the Cavs are about to CRUSH the Golden State Warriors' championship dreams.

He also talks about his cooking plans with Oakley In the Kitchen (that's right, dude can cook!)