Sir Paul McCartney and the Beatles had very unique bonding sessions.
The 76-year-old star has confessed there were times early in their career when him and his Beatles bandmates - John Lennon, George Harrison and Ringo Starr - used to sit on chairs and masturbate together.
He shared: ''What it was ... was over at John's house, and it was just a group of us. And instead of just getting roaring drunk and partying - I don't even know if we were staying over or anything - we were all just in these chairs, and the lights were out, and somebody started masturbating, so we all did.''
However, it soon came to an abrupt halt after John yelled out Winston Churchill in the middle of the session.
He added: ''I think John sort of said, 'Winston Churchill!'''
And of the sessions, he added: ''It was maybe a two-off. It was just the kind of thing you didn't think much of. It was just a group. Yeah, it's quite raunchy when you think about it. There's so many things like that from when you're a kid that you look back on and you're, 'Did we do that?' But it was good harmless fun. It didn't hurt anyone. Not even Brigitte Bardot.''
Meanwhile, elsewhere in the interview, Paul insisted he never really had any ''orgies'' because it wasn't his thing but he wasn't sure if his bandmates followed suit.
He told GQ magazine: ''There weren't really orgies, to my knowledge. There were sexual encounters of the celestial kind and there were groupies. I'm just not into orgies. I don't want anyone else there. It ruins it! There was once when we were in Vegas where the tour guy, a fixer, said, 'You're going to Vegas, guys - you want a hooker?'. We were all, 'Yeah!'. And I requested two. And I had them and it was a wonderful experience. But that's the closest I ever came to an orgy.
''See, the thing is, in the next room I think the guys might have ordered something else off the menu. So that would figure if John was saying, yeah, it was all bacchanalian. I think John was a little more that way, because thinking back, I remember there was someone in a club that he'd met, and they'd gone back to the house because the wife fancied John, wanted to have sex with him. So that happened and John discovered the husband was watching. That was called 'kinky' in those days. So I think maybe John experienced a bit more of that than I did. I just didn't fancy it, that kind of thing. Someone else's wife? I definitely wouldn't want the husband to know. You know, that seems sensible to me.''