Megan Fox is the first to admit she’s dangerous — and that boyfriend Brian Austin Green might want to worry about his safety.

“My temper is ridiculously bad,” Fox confessed to Rolling Stone magazine. “I’ve had to say to Brian, ‘You have to go and stop talking to me, because I’m going to kill you. I’m going to stab you with something, please leave.’”

And it’s because of that temper that Fox isn’t armed, she says. “I’d never own a gun for that reason ... I wouldn’t shoot to kill. But I would shoot him in the leg, for sure.”