McFly have insisted that boyband One Direction are far "more rock 'n' roll" than they are.
The group - who have dressed up as OAPs for a shoot with Heat magazine - told the publication how they partied with 1D in the US, with member Tom Fletcher unable to keep up with Irish heartthrob, Niall Horan.
Fletcher revealed: "They're probably more rock 'n' roll than we are. Niall's a funny guy."
Harry Judd said: "Me and Danny had a late night with Niall. I went to bed at 3.30am... Tom was on his balcony and Niall said, 'Tom, come play some songs!' You were angry at the situation, because you wanted to go to bed."
Fletcher then confessed: "I wanted to chill out," to which Judd added: "But instead you went, [puts on a granddad voice] 'No, I'm going to bed!'"
The full interview appears in this week's Heat magazine, on sale now.
McFly also hit the headlines this week after denying reports suggesting that they gave their "s**t" songs to One Direction for their LP Take Me Home - with Tom rubbishing the claims on Twitter.
During an interview with The Metro, Fletcher was quoted as saying: "We just worked on a couple of songs on their new album. They came over to do a writing session and I had a few song ideas.
"It's hard when you're writing for someone else. You obviously always want to do your best work, but sometimes you write and have a song idea and you're like, 'Oh, it's so good I want to keep it for us'."
Bandmate Danny Jones asked Fletcher: "You sent that slightly s**tter one, didn't ya?"
Tom then added: "So I played them a few song ideas and they went for one of the others. I was like, yes!"
However, Tom went on to clarify the comments on Twitter, writing: "So, the stuff in the press today about us giving One Direction our 's**t' songs is obviously completely false.
"What Danny said was obviously a joke. We would never, NEVER, give anyone 's**t' songs and as I clearly say in the interview 'You obviously always want to do your best work'.
"In fact all 3 songs I've written for 1D are some of my favourites I've EVER written and I genuinely would have kept them for mcfly but I have never, and will never give anyone second rate songs."
He concluded: "How would that ever be good for me as a song writer? And the most important point of all is…I've never written a s**t song ;)
"Anyway, if you want to hear the song we did for 1D then it's 'I Would' track 9. Hope you like it."