Saoirse Ronan told the press this week she enjoyed having the opportunity to kick the ass of her 'Hanna' co-star Eric Bana.
But don't think she's a tough girl, she added that in reality she wouldn't hurt a fly.
The 16-year-old Irish actress plays a teenage assassin in which octane new thriller 'Hanna' but the truth is she admits she feels terrible if she accidentally kills even a spider.
Ronan said: "I've never killed an animal. I actually apologize to flies. Well, not flies. I hate flies. But if a spider dies by accident, I'll say sorry to it. I'm not a murderer."
Saoirse didn't have quite so many qualms about roughing up Eric Bana, who has previously played the angry green superhero the 'Hulk.'
Ronan added: "He is big. He's really big. And he's tall. And he's got huge arms, hasn't he? They're huge!
"It was great actually because I could just go for it. I reckon I did hurt him once or twice. And now I can say that I kicked the ass of the Hulk."
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