Mel Gibson is an actor/director who isn't known for his subtlety. His rants and raves with whatever -- and whomever -- are already known. He's still a fine actor though, and that's why some fans don't care about his views. One person who isn't a fan? 'Showgirls' scribe Joe Eszterhas, who decided to write a 30,000-word ebook about his arguments with Mad Max.

Hollywood is known for its maturity and this is just one example of that. Back in April, we reported on Mel Gibson's new religious project called ‘The Maccabees' being rejected over at Warner Bros. Not for the subject matter, mind you, but because the script was terrible. This led to a small war of words between Mel and screenwriter Joe Eszterhas, who said to The Wrap, “I’ve come to the conclusion that the reason you won’t make ‘The Maccabees’ is the ugliest possible one. You hate Jews.” which led to Mel responding, “I guess you only had a problem with me after Warner Brothers rejected your script.”

Now things are getting even more middle school, at least when it comes to Eszterhas. He wrote a Kindle book called 'Heaven and Mel' about his fight with Mel Gibson, covering their attempt to get 'The Maccabees' off the ground and his other rants. Eszterhas says much of the book covers "anti-Semitism and questions of values," but that "Much of it is amusing." Yep. Totally laughing right now.

No word from Mel's camp yet but we're sure holding Joe down while he punches his shoulder, destroys his sand castle and yells out in public that he likes icky girls is going to be the next step in this hot Hollywood playground feud. We'll keep you updated.