Caution…profanity? Apparently, there’s a prerequisite that if you want to be a leading man in a Terminator film, you need to take ‘roids and/or struggle with ‘roid-style rage.

You may remember that Christian Bale went nuts on the set of Terminator Salvation a few months back, threatening to stop production and beat some serious ass.

Well, the incident was audiotaped, and it’s amazing. It happened on the set after a director of photography accidentally ruined a scene by walking onto the set. Bale lost it, screaming, yelling and threatening to quit if the bosses didn’t fire the dude.

Apparently, the film execs were so freaked out that they sent the tape to their insurance company in case Bale decided to walk.

[TMZ]