Shia LaBeouf is determined to cement his reputation as a Hollywood bad boy with a new interview in Details magazine, where he admits to hooking up with Megan Fox, trashing his directors, throwing down on tough guy Tom Hardy and more.

LaBeouf seems to be channeling his inner Charlie Sheen as he says, "I would like to be George Clooney -- diplomatic. I just don't have the wherewithal yet or the inner serenity. My bullsh*t meter is tuned very sensitive."

As for his dalliance with Fox, LaBeouf says, "Look, you're on the set for six months, with someone who's rooting to be attracted to you, and you're rooting to be attracted to them. I never understood the separation of work and life in that situation. But the time I spent with Megan was our own thing, and I think you can see the chemistry onscreen."

And what about Fox's now-husband Brian Austin Green? "I don't know, man. I don't know. I don't know ... It was what it was," is all the actor says.

Read on for more outrageous LaBeouf statements ...

Fox has been blasted for criticizing 'Transformers' director Michael Bay -- even LaBeouf took Bay's side -- but remember when Shia was less than kind to his 'Indiana Jones' director, Steven Spielberg? "When you drop the ball, you drop the ball," he said of the film. "I got lambasted for that, and understandably so," he now says. "Because you can't be an actor and be honest -- that's crazy!"

He also trashed 'Transformers: Revenge of the Fallen,' which began filming with an unfinished script: "None of us had any clue what we were doing." Well, at least he didn't compare Bay to Hitler.

On the bar fight that got him led away in handcuffs: "I was actually researching. As crazy as that sounds to blame it on the acting thing, I was getting ready to make a movie about dudes who live on moonshine every single day."

On why ordinary dudes want to challenge him: "This is not to be comparing myself to [Leo] DiCaprio, but I remember the hatred for him when every girl I liked wanted to ... It's not extraordinary envy, like Robert Pattinson fan-worship sh*t, but I do feel animosity from men. They feel like they want to challenge me. 'I just f*cked up Shia LaBeouf!' It's a story you can tell, and I guess you're cool for it."

On his tough childhood: "I got kicked out of every school I ever went to. You weren't fighting because you were a tough guy. You were fighting because a dude comes up and punches you in the chest -- so either you hit him back or not only is he going to punch you every day but all his friends are going to beat the sh*t out of you. You fight out of f*cking survival. I still have that in me, which gets me into trouble."

On landing his Disney Channel gig with a Lenny Bruce routine: "They didn't hire me because I was a good-looking dude. They hired me because I had no fear, no respect for authority, and no respect for boundaries."

On hiring his AWOL, alcoholic dad to be his legal guardian on set: "I basically rented my dad back. We developed a relationship based on this commerce."

On his relationship with Isabel Lucas, who was in his car when he flipped it: "It was sort of disastrous. Neither one of us, I think, were in love. Just sort of experimenting or whatever."

On attacking a paparazzi about to take long-lens photos inside his house: "I'm a little territorial and defensive. I don't like having my space invaded. I'm a f*cking human being who pays his taxes. And I don't respond in a really sweetheart way. I mean, maybe I should develop that, but even as I say that, I have this cheerleader in the back of my head that's like, 'No, man, don't conform!'"

On how his reputation gives him cred: "I've noticed that since this 'wild child' sh*t has been posted on my head, people seem a little more respectful."

On his disastrous date with Hilary Duff: "Probably the worst date either of us has ever had."

On throwing down on co-star Tom Hardy on the set of 'Wettest County in the World': "He never did that roughhouse stuff with me again."

On not being in it for the money (despite his $15 million paychecks): " I don't give a f*ck. At this point I have enough money to live 25 lifetimes. You couldn't spend the money I've accrued now. I have no interest in the materialistic bullsh*t money can buy."

On his own acting: "I am trying to impress myself. I have yet to do it."

On preferring prostitutes to A-list actresses: "It's below my dignity. It's not me. I'd feel disgusted with myself. It takes a certain mentality to be able to pay a hooker and stay hard, if you know what I mean."

On hating downtime: "I'm a call-sheet junkie. I love being on set. So the hardest thing for me is dealing with all this idle time. That's when I get into trouble."

Read the entire Details interview.