London, Sep 16 - Hollywood actress Megan Fox says she can get quite violent at times and that she often threatens to kill her boyfriend during fights.

The 'Tranformers' star admits that she struggles to control her temper, leading to some explosive outbursts towards on-off lover Brian Austin Green, reported contactmusic.com.

'My temper is ridiculously bad. I've said 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',' she said.

The 23-year-old star admits she is so worried about her emotional reactions, she won't let herself be around firearms in case she injured Brian.

'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,' she added.

Megan has previously confessed she finds on-screen violence 'sexy'.