Speaking to Talk Is Jericho, AC/DC guitarist Angus Young remembered a weird incident where his brother, Malcolm and Black Sabbath’s Geezer Butler were involved.

The guitarist said:

“No, not really. When we were growing up – you grow up like in your local neighborhood and stuff – and you couldn’t…

“If somebody was looking for trouble, they picked on the wrong guy because he was very fast.

“The thing with Geezer Butler, I think they were drinking one night and I think Geezer had some knife or something, and he flashed it at Malcolm.

“Malcolm took it off – there’s a trick of getting knives away from people, so Malcolm immediately did that and he said, ‘What are you gonna do now?’

“So it was just the case of that. Malcolm, he woke up the next day, felt bad about it, because we were touring with them, and he thought, ‘I better go and say sorry about the night before.’

“And he went there be bumped into Ozzy [Osbourne, vocals], and Ozzy was, ‘What are you doing here?’.

“And Mal said, ‘I had a bit of a run with Geezer and his knife…’ And Ozzy said, ‘Him and that f*cking knife; don’t apologize to him, Mal, tell him to f*ck off!’ [Laughs]”