Mel Gibson Rant -- 'C**T, C**ksucker Whore!!!" [AUDIO]

Mel Gibson is caught on tape exploding in a rage during a trip to Costa Rica last December, screaming at the top of his lungs ... and now the audio has been released. WARNING: EXPLICIT, FILTHY LANGUAGE.

The Wrap obtained the tape from Joe Eszterhas -- the man who wrote the screenplay for "The Maccabees" with Mel. Eszterhas has made shocking allegations that Mel ranted about killing Oksana Grigorieva, hating Jews, and praising the guy who killled John Lennon.

Eszterhas's son Nick recorded one of Mel's outbursts ... which starts with Mel blasting Joe, "Why don't I have a first draft of "The Maccabees?" What the f**k have you been doing?"

Mel goes on, turning his anger at Oksana: "I am earning money for a filthy little c**ksucker who takes advantage of me."

Mel can then be heard slamming objects in the house, and then continues screaming, "Who wants to eat? Who the f**k wants to eat? Go have something to eat. Hurraaayyyyy!"

Mel continues to cuss, adding, "f**king c**t, c**ksucker whore."

4:59 PM PST -- Mel just arrived to a speaking engagement in Austin, TX to promote his new film, "Get the Gringo." Wonder if anyone will ask him about Costa Rica ...